2023 Subaru Impreza Oil and Lubricants

FRAM Engine Oil Full Synthetic SAE 0W-20 is a full synthetic motor oil blended with high quality synthetic base stocks and the latest additive technology to meet the stringent API: SP, SN, SM, SL, SJ, GM dexos1 Gen 2 and ILSAC GF-6A specifications to provide the ultimate protection for your engine. Specifically formulated for the rigorous environment of gas-direct engine (GDI) and turbo gas-direct engine (TGDI) designs as well as providing increased protection for carbureted or normally fuel injected engines. FRAM Engine Oil Full Synthetic SAE 0W-20 contains additive technology designed to prevent low-speed pre-ignition (LSPI). LSPI can lead to pre-mature engine failure and is a major concern of the automotive industry for vehicles employing GDI or TGDI technology. This oil also provides increased wear protection, oxidation and shear stability over previous oil categories. FRAM Engine Oil Full Synthetic SAE 0W-20 and is a fully licensed GM dexos1 Gen 2 motor oil.

Product Features:

• Faster oil flow at start-up
• Fuel efficiency gains over heavier grade oils
• Excellent sludge and varnish protection
• Outstanding thermal and oxidation stability, lowers oil vaporization and consumption at extreme conditions
• Always refer to your vehicles operating manual to select the correct grade oil for your engine.
• Ultimate engine protection: FRAM Full Synthetic 0W20 5 QT is specifically formulated to meet the stringent API: SP, SN, SM, SL, SJ, GM dexos1 Gen 2 and ILSAC GF-6A specifications to provide the ultimate protection for your engine.

Give your higher mileage engine the care it deserves with Mobil 1 High Mileage full-synthetic motor oil 0W-20. This formula utilizes Mobil 1’s signature Triple Action Formula to deliver outstanding engine performance, protection, and cleanliness to vehicles with over 75,000 miles. Mobil 1 High Mileage motor oil extends engine life by reducing friction and preventing deposits and sludge buildup, keeping critical engine parts clean and protected for up to 10,000 miles between oil changes. (1) Mobil 1 helps to keep your engine running at lower temperatures (2) and is proven to cool engine temperatures by over 10%. (3) Mobil 1 High Mileage full-synthetic motor oil 0W-20 also helps control oxidation to prevent oil breakdown and is recommended by ExxonMobil for all types of modern cars, SUVs, light vans, and light trucks, including those with high-performance, turbocharged, supercharged, multi-valve, or fuel-injected engines. Mobil 1 is America’s #1 selling synthetic motor oil brand at retail, (4) trusted and recommended by car builders and experienced mechanics, and is the Official Motor Oil of NASCAR. ( (1) Protects for up to 10,000 miles or 1 year, whichever comes first. To learn more about the Mobil 1 Limited Warranty, visit Mobil.US. (2) Compared to conventional oil. (3) Based on proprietary engine testing¿results may vary. (4) Source: The NPD Group/ Retail Tracking Service/ Dollar Sales/ PCMO full-synthetic/ 52 weeks ending July 1, 2023)

Product Features:

• Mobil 1 high mileage full-synthetic engine oil 0w-20 is designed for engines with over 75,000 miles to go up to 10,000 miles between oil changes.(1)
• Utilizes Mobil 1’s signature triple action formula to deliver outstanding engine performance, protection, and cleanliness
• Meets ilsac gf-6 standards to help provide low-speed pre-ignition (lspi) and timing chain wear protection while keeping your engine clean and helping to improve your fuel economy
• Provides excellent internal engine heat protection (up to 500 degrees f) and low temperature protection (to -30 degrees f)
• Mobil 1 is specially formulated to help remove sludge and lower engine temperatures
• Manufacturer part number: 122536

Today’s advanced engine technology requires advanced protection. Valvoline Advanced Full Synthetic, the motor oil designed to protect today’s sophisticated engines, contains premium anti-wear additives, superior antioxidants and extra detergents. It protects 40% better against wear, resists oil breakdown 10-times better, and defends 25% more against deposits than industry standards for maximum performance and engine longevity. And with an exceptional range of temperature protection your engine will ready for extreme weather. Valvoline invented motor oil 150 years ago, and we’ve been reinventing it ever since. Get Valvoline Advanced Full Synthetic and give your engine the advanced protection proven to maximize engine life.

Product Features:

• Advanced protection against the four main causes of engine breakdown: wear friction heat and deposits
• 40% better wear protection vs. industry standard as tested in the sequence ivb engine test
• 25% better deposit protection with superior engine cleaning detergents as tested in the gmod engine test
• Exceptional high/low temperature protection defends your motor no matter the weather conditions
• Meets or exceeds all requirements of ilsac gf-6a, api sp, api sn with sn plus, api sn, gm dexos 1 gen 3
• Superior engine protection: Valvoline SynPower Full Synthetic Engine Oil provides superior protection against engine sludge and varnish, ensuring your engine stays clean and running smoothly.

FRAM Conventional High Mileage 5W30 Engine Oil is specially designed with enhanced  additives to help reduce leaks and oil consumption in worn or higher mileage engines. This oil is formulated to help clean out sludge buildup and keep engines running clean and with  increased efficiency and power. They are specially designed for engines with over 75,000 miles.  FRAM Conventional High Mileage 5W30 Engine Oil will protect domestic and imported vehicles and  equipment powered with either gasoline or light duty diesel engines – even those that are turbo charged or super-charged. This high-quality oil is specifically formulated to meet or exceed  all new car manufacturers’ warranty requirements as well as the stringent industry standards API  SP/CF, and 5W30 grade will also meet or exceed the ILSAC GF-6A Resource Conserving Service Category.

Product Features:

• Formulated with a unique combination of premium base oils and an enhanced additive system
• Provides increased protection in higher mileage engines
• Helps restore seal condition to reduce oil consumption
• Increases protection against high temperature deposits and ring sticking
• Always refer to your vehicles operating manual to select the correct grade oil for your engine.
• Specially formulated for engines with over 75,000 miles to help reduce leaks and oil consumption.

Castrol® Ultraclean synthetic blend engine oil is our cleanest GTX ever. Environmental factors such as poor fuel quality, hot weather and stop-start driving conditions can lead to the buildup of sludge that can reduce engine life, power and fuel economy. Castrol Ultraclean has a double-action formula proven to clean away the sludge that can block engine oilways and helps prevent new sludge formation from occurring. In fact, it provides up to 1.4X better sludge protection than is demanded by the latest industry standard (as measured in the Sequence VH Sludge test vs. API SP test limits). No other oil keeps engines cleaner.

Product Features:

• Premium-quality base oils and anti-wear additives that help extend the life of your engine
• 1.4X superior sludge protection compared to tough industry standards, as measured in the Sequence VH Sludge test vs. API SP test limits
• Advanced protection against viscosity and thermal breakdown
• Superior protection against high-temperature deposits
• Meets or exceeds API SP/SN PLUS/SN, ILSAC GF-6 and latest Ford specs
• Double-Action Formula: Castrol Ultraclean’s unique double-action formula effectively cleans away existing sludge and prevents new sludge formation, ensuring optimal engine performance.
• Enhanced Engine Life and Performance: Designed to combat environmental factors like poor fuel quality, hot weather, and stop-start driving conditions, which can reduce engine life, power, and fuel economy.
• Synthetic Blend Composition: Combines the benefits of synthetic and conventional oils, offering superior protection and performance in a 5W-30 SAE oil weight.
• Cleanest GTX Ever: Marketed as Castrol’s cleanest GTX oil, ensuring that no other oil keeps engines cleaner, making it an ideal choice for maintaining engine cleanliness and efficiency.

FRAM Engine Oil SAE 10W-40 engine oil utilizes high-quality base stocks and a robustï additive system to provide reliable engine protection across a broad range of operatingï conditions. Specifically formulated for use in modern gas-direct engines (GDI) and turbo gas direct engines (TGDI) as well as older carbureted or normally fuel injected gasoline engineï designs. FRAM Engine Oil SAE 10W-40 contains additive technology designed to preventï low-speed pre-ignition (LSPI) while also providing increased wear protection, oxidation andï shear stability over previous oil categories. The FRAM Engine Oil SAE 10W-40 meets theï requirements for API SP, SN Plus, SN, SM and earlier API Service Categories.

Product Features:

• Low-speed pre-ignition control
• Chain wear protection
• Piston cleanliness
• Turbo-compatibility
• Low-speed pre-ignition control
• Chain wear protection
• Piston cleanliness
• Turbo-compatibility
• Always refer to your vehicles operating manual to select the correct grade oil for your engine.

You trust your car to keep you going, even after 75,000 miles. Mobil 1 Extended Performance High Mileage full-synthetic motor oil 0W-20 gives engines with over 75,000 miles the extra care they need to go the distance. Formulated to help prevent leaks, it helps to protect critical engine parts for up to 20,000 miles between oil changes, guaranteed.(1) Utilizes Mobil 1’s Triple Action+ Formula to combine outstanding engine performance, protection, and cleanliness with the added benefit of maximized engine power. This cutting-edge formula is recommended by ExxonMobil for all types of modern vehicles, including high-performance, turbo-charged, and supercharged gasoline and diesel multi-valve fuel-injected engines found in passenger cars, SUVs, light vans, and light trucks. Mobil 1 is America’s No. 1 synthetic motor oil brand at retail,(2) trusted and recommended by car builders and experienced mechanics, and is the Official Motor Oil of NASCAR. ((1)Protects for up to 20,000 miles or 1 year, whichever comes first. To learn more about the Mobil 1 Limited Warranty, visit Mobil.US. (2)Source: The NPD Group/Retail Tracking Service/Dollar Sales/PCMO full-synthetic/52 weeks ending July 1, 2023)

Product Features:

• Mobil 1 Extended Performance High Mileage full-synthetic motor oil 0W-20 is designed for engines with over 75,000 miles to go up to 20,000 miles between oil changes. (1)
• Utilizes Mobil 1’s Triple Action+ Formula to combine outstanding engine performance, protection, and cleanliness with the added benefit of power
• Meets ILSAC GF-6 standards to help provide low-speed pre-ignition (LSPI) and timing chain wear protection while keeping your engine clean and helping to improve your fuel economy
• Provides excellent internal engine heat protection (up to 500 degrees F) and low temperature protection (to -40 degrees F)
• Helps extend engine life by working to prevent damaging deposits and sludge buildup
• Manufacturer Part Number: 123836
• Leak Prevention: Specifically designed to help prevent leaks in engines with over 75,000 miles, offering extra care and maintenance for older vehicles.
• Versatile Compatibility: Recommended for all types of modern vehicles, including high-performance, turbo-charged, and supercharged gasoline and diesel multi-valve fuel-injected engines found in passenger cars, SUVs, light vans, and light trucks.
• Trusted Brand: Mobil 1 is America’s No. 1 synthetic motor oil brand at retail, trusted and recommended by car builders and experienced mechanics, and is the Official Motor Oil of NASCAR«.
• Trusted Brand: Mobil 1 is America’s No. 1 synthetic motor oil brand at retail, trusted and recommended by car builders and experienced mechanics, and is the Official Motor Oil of NASCAR®.

FRAM Engine Oil SAE 10W-30 utilizes a blend of high-quality conventional base stocks coupled with a robust additive system to provide reliable engine protection across a broad range of operating conditions. Specifically formulated for use in modern gas-direct engines (GDI) and turbo gas-direct engines (TGDI) as well as older carbureted or normally fuel injected gasoline engine designs. FRAM Engine Oil SAE 5W-30 contains additive technology designed to prevent low-speed pre-ignition (LSPI) while also providing increased wear protection, oxidation and shear stability over previous oil categories. FRAM Engine Oil SAE 10W-30 meets the requirements for API SP, SN Plus, SN, SM and ILSAC GF-6A, GF-5 and earlier API and ILSAC Service Categories.

Product Features:

• Low-speed pre-ignition control
• Chain wear protection
• Piston cleanliness
• Turbo-compatibility
• Always refer to your vehicles operating manual to select the correct grade oil for your engine.
• Suitable for modern engines: Specifically formulated for use in modern gas-direct engines (GDI) and turbo gas-direct engines (TGDI) as well as older carbureted or normally fuel injected gasoline engine designs.

Pennzoil Platinum full synthetic SAE 0W-20 motor oil is uniquely engineered from our revolutionary PurePlus gas-to-liquid technology, which is a patented process that converts pure natural gas into a high quality, full synthetic base oil. Our high-quality base oil is 99.5% pure, contains fewer impurities than base oils made from crude oil, and when combined with our advanced additive technology creates one of the best formulations in our Pennzoil portfolio. Pennzoil Platinum full synthetic SAE 0W-20 motor oil is licensed and meets the vehicle warranty requirements of GM’s dexos 1 Gen 2 specifications that are set forth to meet today’s modern engine technologies. This means that our Pennzoil Platinum full synthetic products meet the stringent requirements of leading car manufacturers. Why does this matter? Modern engine technologies have evolved over the years and today’s engine parts have reached an unprecedented level of fine manufacturing tolerances which require a high-quality engine oil to help provide complete engine protection. This includes protection against abnormal combustion phenomenon like low-speed pre-ignition observed in modern turbocharged gasoline direct injection (TGDI) engines.

Product Features:

• Full synthetic 0W-20 engine oil made from made from natural gas, not crude, using Pennzoil’s patented gas-to-liquid PurePlus Technology
• Provides better fuel economy-drive on average an extra 550 miles per year (versus a dirty engine)
• Pennzoil Platinum 0W-20 keeps pistons up to 45% cleaner than the toughest industry standard (Based on Sequence IIIH results)
• No other leading synthetic oil provides better wear protection from friction (Based on Sequence IVA wear test using SAE 5W-30)
• Formulated to provide faster low-temperature oil flow and protection in extreme heat
• Helps protect engines from loss of power
• Formulated for modern turbocharged engines-GF-6, API SP/SP-Resource Conserving and all previous categories
• Superior Purity: Contains 99.5% pure base oil with fewer impurities compared to base oils made from crude oil, ensuring optimal engine performance.
• Advanced Additive Technology: Combines high-quality base oil with advanced additives to create one of the best formulations in the Pennzoil portfolio.
• Meets Modern Engine Requirements: Licensed and meets GM’s dexos 1 Gen 2 specifications, ensuring compatibility with today’s modern engine technologies and stringent car manufacturer requirements.
• Complete Engine Protection: Provides protection against abnormal combustion phenomena like low-speed pre-ignition in modern turbocharged gasoline direct injection (TGDI) engines, ensuring complete engine protection.

Upgrading your motor oil to Valvoline Full Synthetic High Mileage with MaxLife Technology can help you increase the longevity of your car, truck or SUV with over 75,000 miles. It’s proven to protect your high-mileage motor against wear, friction, heat, and deposits – the leading causes of engine breakdown and expensive repairs. Our exclusive formulation goes beyond industry standards to protect your engine. It’s fortified with enhanced wear additives and friction-fighting agents to safeguard critical engine components, extra detergents to clean inside your engine, and premium seal conditioners to restore aging seals and prevent leaks. Superior viscosity modifiers and high-quality base oils help it perform exceptionally in both high and low temperatures. Engineered with ingenuity, tested with tenacity, and proven with purpose, our formula was innovated in America with a century and a half of hands-on experience from the original motor oil brand.

Product Features:

• Enhanced maxlife technology prevents engine breakdown in extreme conditions with 50% better wear protection than the industry standard
• Treat and prevent leaks with premium seal conditioners to keep oil out of places it shouldn’t be
• 25% extra defense against deposits, sludge, corrosion and rust via interior-cleansing detergents
• Extreme temperature protection through our high-quality base oils and superior viscosity modifiers
• Meets or exceeds all requirements of ilsac gf-6a, api sp, api sn with sn plus, api sn
• High Mileage Oil Class: Valvoline MaxLife Synthetic Engine Oil is specially designed for engines with over 75,000 miles, providing superior protection against wear, friction, heat, and deposits – the leading causes of engine breakdown and expensive repair

FRAM Engine Oil Full Synthetic SAE 5W-30 is a full synthetic motor oil blended with high quality synthetic base stocks and the latest additive technology to meet the stringent API: SP, SN, SM, SL, SJ, GM dexos®1 Gen 3 and ILSAC GF-6A specifications to provide the ultimate protection for your engine. Specifically formulated for the rigorous environment of gas-direct engine (GDI) and turbo gas-direct engine (TGDI) designs as well as providing increased protection for carbureted or normally fuel injected engines. FRAM Engine Oil Full Synthetic SAE 5W-30 contains additive technology designed to prevent low-speed pre-ignition (LSPI). LSPI can lead to pre-mature engine failure and is a major concern of the automotive industry for vehicles employing GDI or TGDI technology. This oil also provides increased wear protection, oxidation and shear stability over previous oil categories. FRAM Engine Oil Full Synthetic SAE 5W-30 and is a fully licensed GM dexos®1 Gen 3 motor oil.

Product Features:

• Faster oil flow at start-up
• Fuel efficiency gains over heavier grade oils
• Excellent sludge and varnish protection
• Outstanding thermal and oxidation stability
• Lowers oil vaporization and consumption at extreme conditions
• ALWAYS REFER TO YOUR VEHICLES OPERATING MANUAL TO SELECT THE CORRECT GRADE OIL FOR YOUR ENGINE.
• Ultimate Engine Protection: FRAM Engine Oil Full Synthetic SAE 5W-30 meets stringent API: SP, SN, SM, SL, SJ, GM dexos«1 Gen 3, and ILSAC GF-6A specifications, ensuring top-tier protection for your engine.
• Advanced Additive Technology: Specifically formulated to prevent low-speed pre-ignition (LSPI), a major concern for vehicles with gas-direct engine (GDI) and turbo gas-direct engine (TGDI) designs, reducing the risk of premature engine failure.
• Enhanced Wear Protection: Provides increased wear protection, oxidation, and shear stability over previous oil categories, extending the life of your engine.
• Versatile Compatibility: Suitable for use in carbureted, normally fuel-injected engines, and the rigorous environment of GDI and TGDI engines, offering broad application versatility.
• Fully Licensed GM dexos«1 Gen 3: This oil is a fully licensed GM dexos«1 Gen 3 motor oil, ensuring it meets the high standards set by General Motors for optimal engine performance.

Sludge can block your engine’s vital oilways like cholesterol and if untreated, can rob an engine of its power and ultimately its life. Castrol GTX is a premium conventional motor oil that has been helping to extend engine life for over 50 years. It has evolved to meet the needs of consumers and vehicle manufacturers since 1968 and continues to innovate and remain a trusted brand today. Severe driving conditions such as heavy traffic, poor fuel quality, harsh driving conditions and exceeding oil change intervals can all cause the build-up of a thick, tar like substance called sludge. If untreated, it can rob a car’s engine of its power and ultimately its life. GTX is specially engineered to prevent harmful build-up of sludge while protecting against new oil splatter formation better than tough industry standards. Help Extend the Life of Your Engine with Castrol GTX.

Product Features:

• Superior protection against engine sludge (When tested in engines with a high level of sludge)
• Advanced protection against viscosity and thermal breakdown
• Premium quality base oils and anti-wear additives to help extend the life of your engine
• Helps minimize oil consumption
• Proven Longevity: With over 50 years of innovation and trust, Castrol GTX helps extend the life of your engine by protecting against new oil splatter formation better than tough industry standards.
• Adaptable to Severe Conditions: Designed to perform under severe driving conditions such as heavy traffic, poor fuel quality, and harsh driving environments, ensuring your engine remains powerful and reliable.
• Premium Conventional Oil: As a premium conventional motor oil, Castrol GTX meets the needs of both consumers and vehicle manufacturers, providing reliable performance and protection.
• Optimal Viscosity: Featuring an SAE oil weight of 10W-30, Castrol GTX offers optimal viscosity for a wide range of temperatures, ensuring smooth engine operation and protection.

FRAM Full Synthetic High Mileage SAE 0W-20 is a full synthetic motor oil blended with high quality synthetic base stocks and and enhanced additives that meet the stringent API: SP, SN, SM, SL, SJ, and ILSAC GF-6A specifications while reducing leaks and oil consumption in worn or higher mileage engines. Formulated with synthetic base stocks, this oil offers increased oxidation inhibition performance as well as increased high and low temperature performance when compared against conventional oils. The FRAM Full Synthetic High Mileage SAE 0W-20 is formulated to help clean out sludge buildup and keep engines running clean and with increased efficiency and power. Specially designed for engines with over 75,000 miles, the FRAM Full Synthetic High Mileage SAE 0W-20 provides the ultimate protection for your higher mileage engine. Specifically formulated for the rigorous environment of gas-direct engine (GDI) and turbo gas-direct engine (TGDI) designs as well as providing increased protection for carbureted or normally fuel injected engines. FRAM Full Synthetic High Mileage SAE 0W-20 contains additive technology designed to prevent low-speed pre-ignition (LSPI). LSPI can lead to pre-mature engine failure and is a major concern of the automotive industry for vehicles employing GDI or TGDI technology. This oil also provides increased wear protection, oxidation and shear stability for higher mileage vehicles over previous oil categories.

Product Features:

• Faster oil flow at start-up
• Fuel efficiency gains over heavier grade oils
• Reduces oil cumsumption
• Excellent sludge and varnish protection
• Slows engine leaks
• Outstanding thermal and oxidation stability
• Lowers oil vaporization and consumption at extreme conditions
• Always refer to your vehicles operating manual to select the correct grade oil for your engine.

Mobil 1 ESP X2 full synthetic motor oil 0W-20 is designed to provide outstanding engine cleanliness, wear protection, and advanced fuel economy (1) to keep your engine running like new. This proprietary motor oil has been engineered to help prolong the life and maintain the efficiency of emission systems in new emerging diesel and gasoline-powered European vehicles that require SAE 0W-20 viscosity grades. Mobil 1 ESP has active cleaning agents that help to reduce deposits and sludge buildup for a cleaner engine. This technologically advanced formula helps to reduce oil aging with excellent oxidation stability for extended oil drain interval protection and offers low-temperature protection for quick cold-weather starting and ultra-fast protection. Mobil 1 ESP X2 0W-20 combines durability and protection with a low viscosity, low friction motor oil that was designed in cooperation with key European Original Equipment Manufacturers (OEMs). Mobil 1 is America’s leading synthetic motor oil brand at retail (1) , recommended by car builders and experienced mechanics, and is the Official Motor Oil of NASCAR. To learn about the Mobil 1 Limited Warranty, visit Mobil.US. ( (1) Compared to Mobil 1 ESP Formula 5W-30. (2) Source: The NPD Group/ Retail Tracking Service/ Dollar Sales/ PCMO Full Synthetic/ 52 weeks ending July 1, 2023)

Product Features:

• Mobil 1 ESP 0W-20 full synthetic oil is formulated for passenger car diesels with diesel particulate filters (DPFs) and gasoline catalytic converters (CATs)
• Engineered to help prolong the life and maintain the efficiency of emission systems in diesel and gasoline-powered European vehicles
• Low viscosity, low friction motor oil designed with key European Original Equipment Manufacturers to ensure durability and protection
• Active cleaning agents that help to reduce deposits and sludge buildup for a cleaner engines
• Excellent low temperature protection for quick cold-weather starting and ultra-fast protection
• Manufacturer Part Number: 125386
• Outstanding Engine Cleanliness and Wear Protection: Mobil 1 ESP X2 0W-20 is designed to keep your engine running like new by providing exceptional engine cleanliness and wear protection.
• Advanced Fuel Economy: This full synthetic motor oil helps improve fuel economy, making it an efficient choice for your vehicle.
• Excellent Oxidation Stability: The advanced formula helps reduce oil aging with excellent oxidation stability, allowing for extended oil drain intervals and providing low-temperature protection for quick cold-weather starts.

Valvoline High Performance Synthetic Gear Oil is the thermally stabile extreme pressure lubricant that offers outstanding protection for gearboxes and differentials in passenger cars, light trucks, and sport utility vehicles. Combined with high quality synthetic base oils, our formula’s superior additives help reliably safeguard against severe temperatures, shock loads, foaming, scuffing, scouring, corrosion and pitting in high load, high torque and high horsepower conditions. Can be used in conventional and limited slip hypoid differentials where GL-5 is specified as well as non-synchronized manual transmissions that require GL-4. Protect your gears with Valvoline, the #1 gear oil brand.

Product Features:

• HIGH PERFORMANCE EXTREME-PRESSURE ADDITIVES HELP MINIMIZE WEAR in high pressure and high temperature conditions
• EXCEPTIONAL HIGH AND LOW TEMPERATURE PROTECTION can easily handle both winter and summer conditions for dependable coverage and protection year-round
• REDUCES CHATTERING AND PROTECTS GEAR TEETH from oxidation, rust, and wear
• FIGHTS CORROSION AND RUST with emulsifying agents and safeguards against impurities, oxidation and thermal breakdown
• SUPERIOR ADDITIVES help reliably safeguard against severe temperatures, shock loads, foaming, scuffing, scouring, corrosion and pitting in high load, high torque and high horsepower conditions