2003 Hummer H1 Engine Oils

Mobil 1 High Mileage motor oil utilizes our signature Triple Action Formula to deliver outstanding engine performance, protection, and cleanliness to vehicles of all ages. Specialty components in synthetic oil extend engine life by reducing the friction that causes deposits and sludge buildup – keeping critical engine parts clean and protected for up to 15,000 miles between oil changes.(1) Mobil 1 High Mileage motor oil meets ILSAC GF-7 standards, offering superior oxidation control, enhanced protection against pre-ignition and timing chain wear, and excellent cold-start and low-temperature performance. Mobil 1 is the No. 1 selling motor oil in America at retail,(2) trusted and recommended by car builders and experienced mechanics, and is the Official Motor Oil of NASCAR(R). Volume: 5 quarts.

Castrol GTX High Mileage 10W-30 is specially formulated for vehicles with over 75,000 miles. It’s a synthetic blend engine oil formulated to provide Superior Protection in 7 Critical Areas including corrosion prevention, sludge control, timing and friction wear and unique protection for your emission system. As your vehicle ages, it becomes more prone to catalytic converter failure, one of the most common and costliest problems faced by higher mileage vehicles. All motor oil contains phosphorus to prevent engine wear, but phosphorus is known to be effectively poisonous to catalytic converters. Castrol GTX High Mileage 10W-30 is formulated with Phosphorous Replacement Technology, a proprietary additive that reduces the level of harmful phosphorus to protect the catalytic converter and preserve the life of your emission system. It also includes specialized additives to reduce leaks, oil burn off and power robbing deposits. Castrol GTX High Mileage 10W-30 provides maximum protection to help extend the life of your high mileage car. Volume: 5 quarts.

Mobil 1 Extended Performance motor oil utilizes our signature Triple Action Formula to deliver outstanding engine performance, protection, and cleanliness to vehicles of all ages. Specialty components in synthetic oil extend engine life by reducing deposits and sludge buildup – keeping critical engine parts clean and protected for up to 25,000 miles between oil changes.(1) Mobil 1 Extended Performance motor oil meets ILSAC GF-7 standards, offering superior oxidation control, enhanced protection against pre-ignition and timing chain wear, and excellent cold-start and low-temperature performance. Mobil 1 is the No. 1 selling motor oil in America at retail,(2) trusted and recommended by car builders and experienced mechanics, and is the Official Motor Oil of NASCAR(R). (1)Protects for 25,000 miles or 1 year, whichever comes first (2)Source: Circana/ Retail Tracking Service/ Dollar Sales/ 52 weeks ending February 1, 2025 (3)vs GF-7 fuel economy requirement Volume: 1 quart.

Shell Rotella T5 15W-40 Synthetic Blend diesel engine oil with Triple Protection Plus technology uses synthetic base oils plus advanced additive technology to provide protection against wear, deposits, and oil breakdown. Triple Protection Plus technology offers better low-temperature flow, which delivers excellent equipment protection, long engine life, and maintains viscosity control under high temperatures. The premium synthetic base oil components help improve cold starting and low-temperature performance without compromising engine protection or durability. Shell Rotella T5 15W-40 goes beyond CK-4 wear limits, delivering an average of 37% better than the maximum wear requirements (calculated average based on API CK-4 wear test results). It’s suitable for a wide range of heavy-duty engine applications, and is an excellent choice for on-highway fleets, construction, agriculture, and diesel pick-up trucks, including high-power vehicles where resistance to increased heat and stress is required. (Shell Rotella Limited Warranty: Valid up to 10 years or 300,000 miles (whichever comes first) if you exclusively use Shell Rotella T5 Synthetic Blend heavy-duty engine oil. Terms and conditions apply. See Rotella.Shell.com/warranty for details.) Volume: 1 gallon.

Mobil Delvac 1300 Super 15W-40 Synthetic Blend Diesel Engine Oil is engineered to deliver exceptional performance and durability for diesel vehicles and equipment. This premium synthetic blend is designed to extend engine life, meeting or exceeding OEM requirements for a wide range of heavy-duty applications. Developed in collaboration with leading Original Equipment Manufacturers, it ensures reliable operation in both on- and off-highway environments. With the ability to perform up to 50% beyond OEM-recommended oil drain intervals, it offers outstanding value and reduced maintenance downtime. Fully backward-compatible, it provides excellent protection for both newer and older heavy-duty engines, as well as gasoline engines requiring API SN specifications. Its advanced formulation ensures superior soot and viscosity control, minimizes oil consumption, and resists corrosive wear, making it a trusted choice for demanding conditions. With a 15W-40 SAE weight and a 2.5-gallon capacity, this oil is a dependable solution for maintaining peak engine performance. Volume: 5 gallons.

Shell Rotella T5 10W-30 Synthetic Blend diesel engine oil with Triple Protection Plus technology combines synthetic base oils and advanced additive technology to provide protection against wear, deposits, and oil breakdown. Triple Protection Plus technology also provides better low-temperature flow and better fuel economy performance (up to 2% fuel economy savings compared to conventional 15W-40 motor oil). The advanced low-ash formulation helps control the blocking or poisoning of exhaust after-treatment devices, helping maintain vehicle emission compliance and engine fuel efficiency. Meeting the requirements of major US and European engine manufacturers for low-emission, heavy-duty engine applications, it’s an excellent choice for on-highway fleets, construction and agriculture applications, and diesel pick-up trucks. Shell Rotella T5 is backed by a free warranty valid up to 10 years or 300,000 miles, whichever comes first. (Shell Rotella Limited Warranty: Valid up to 10 years or 300,000 miles, whichever comes first, if you exclusively use Shell Rotella T5 Synthetic Blend heavy-duty engine oil. Terms and conditions apply. See Rotella.Shell.com/warranty for details.) Volume: 5 gallons.

Pennzoil Platinum High Mileage Full Synthetic 10W-30 is designed to maximize engine protection and is formulated to help stop leaks in engines with more than 75,000 miles. Backed by a 15,000-mile protection guarantee to keep you covered between oil changes and for the long run (see Warranty Information below), it is the first of its kind full synthetic high mileage motor oil made with natural gas and designed to deliver less oil burn off than other high mileage oils (based on Sequence IIIH results). Pennzoil Platinum High Mileage motor oil conditions seals on older engines to give added protection to high-mileage vehicles. It offers complete protection mile after thrilling mile as it protects engines from loss of horsepower, offers excellent performance in extreme temperatures, provides unsurpassed wear protection (based on Sequence IVA wear test using SAE 5W-30), and provides better fuel economy (based on the latest industry standards). (Pennzoil Platinum Lubrication Limited Warranty: Protection for up to 15,000 miles or one year, whichever comes first. Use an oil filter designed for longer oil change intervals and follow OEM manual and vehicles oil life sensor to maintain OEM warranty. Excludes severe driving conditions, including racing and commercial use. Your engine must have fewer than 125,000 miles and have been manufactured in the past 72 months. Enrollment required. Other conditions apply. See pennzoil.com/warranty to enroll and for full details and terms.) Volume: 5 quarts.

T4 Triple Protection 10W-30 Diesel Engine Oil delivers advanced performance and reliability for diesel engines, combining cutting-edge technology with the trusted durability of Shell Rotella. This conventional oil is engineered to provide enhanced protection against oxidation, wear, and deposits, ensuring your engine stays cleaner and performs better over time. Its improved formula supports sustained emission control system durability, making it ideal for vehicles equipped with particulate filters and after-treatment systems. Designed for hard-working diesel engines, this 10W-30 oil adapts to demanding driving conditions, offering consistent performance and long-lasting protection. With a 1-gallon capacity, it’s a dependable choice for maintaining engine health and efficiency. Volume: 1 gallon.

T4 Triple Protection 10W-30 Synthetic Blend Diesel Engine Oil delivers advanced performance for diesel engines, combining cutting-edge technology with proven reliability. This synthetic blend is engineered to provide enhanced protection against oxidation and wear, ensuring your engine stays robust under demanding conditions. Its improved deposit control promotes cleanliness, helping to maintain optimal engine performance over time. Designed specifically for diesel engines, this oil sustains emission control system durability, making it ideal for vehicles equipped with particulate filters and after-treatment systems. With its SAE 10W-30 weight, it adapts seamlessly to varying driving conditions, offering consistent protection and efficiency. Whether you’re tackling tough jobs or long hauls, this oil is built to keep your engine running smoothly while maximizing its lifespan. Volume: 1 quart.

Shell Rotella T6 15W-40 diesel engine oil is a full synthetic motor oil that features exclusive Triple Protection Plus technology, formulated with fully synthetic base oils plus advanced additives to protect against wear, deposits, and oil breakdown. It offers better cold cranking properties and low-temperature pumpability at -15C compared to conventional and synthetic blend Shell Rotella 15W-40 products. It also delivers improved wear performance versus API CJ-4 technology, extended drain capabilities for more uptime, improved protection against oxidation for increased fuel economy, compatibility with exhaust emissions control systems, and protection in extreme operating conditions and climates. Shell Rotella T6 15W-40 is suitable for use in new and older diesel-powered vehicles, from Class 8 tractor/trailers to heavy-duty pickups and delivery, utility, and school bus fleets. Shell Rotella T6 is backed by a limited warranty valid up to 15 years or 500,000 miles (whichever comes first), guaranteed. (Shell Rotella Limited Warranty: Up to 15 years or 500,000 miles, whichever comes first, guaranteed, if you exclusively use Shell Rotella T6 Full Synthetic heavy-duty engine oil and meet enrollment mileage and vehicle manufacture date requirements. Enrollment required. Keep your receipts. Other conditions apply. See Rotella.com/warranty to enroll and for full details and terms.) Volume: 5 gallons.

Premium Blue 15W-40 Engine Oil is a high-performance lubricant meticulously crafted through a 25-year collaboration with Cummins to deliver unmatched protection and efficiency for engines powered by diesel, natural gas, or gasoline. Designed for severe service in both on and off-highway applications, this premium oil reduces inventory complexity by eliminating the need for multiple engine oils, minimizing the risk of human error and critical failures. Its outstanding oxidation resistance ensures extended oil life, even in demanding heavy-duty diesel and natural gas engines, while its superior wear protection safeguards engine components under rigorous conditions. With exceptional deposit control exceeding industry standards, this 5-gallon solution is ideal for maintaining engine reliability and performance, making it a valuable choice for professionals seeking durability and cost-effective operation. Volume: 5 gallons.

Shell Rotella T6 10W-30 diesel engine oil is a full synthetic motor oil that features exclusive Triple Protection Plus technology. It’s formulated with fully synthetic base oils plus advanced additives to protect against wear, deposits, and oil breakdown. It also provides lower oil consumption for reduced maintenance costs, improved wear performance versus API CJ-4 technology, extended drain capabilities for more uptime, improved protection against oxidation for increased fuel economy, and a low ash formulation for emissions system compatibility. Suitable for virtually all modern low-emission heavy-duty engines and older hard-working diesel engines, Shell Rotella T6 10W-30 is an excellent choice for on-highway fleets, general haul, construction, agriculture, public-transport operators, and diesel pick-up trucks. Volume: 5 gallons.

Whatever you’re driving, wherever you’re going, you can trust your car to get you there when you use Mobil 1 advanced full-synthetic motor oil 5W-30. Mobil 1 advanced synthetic motor oil utilizes Mobil 1’s signature Triple Action Formula to deliver outstanding engine performance, protection, and cleanliness to vehicles of all ages. Specialty components in synthetic oil extend engine life by reducing the friction that causes deposits and sludge buildup, keeping critical engine parts clean and protected for up to 10,000 miles between oil changes. (1) This technologically advanced motor oil formulation provides 10X (2) better internal engine heat protection than industry standards (up to 500 Degrees Fahrenheit), as well as exceptional low-temperature protection (to -30 Degrees Fahrenheit), bringing quick cold-weather starting and ultra-fast protection to your engine. Mobil 1 advanced full-synthetic motor oil 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. Mobil 1 advanced full-synthetic motor oil 5W-30 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 leading selling synthetic motor oil brand at retail, (3) trusted and recommended by car builders and experienced mechanics, and is the Official Motor Oil of NASCAR.