1978 Dodge Diplomat Transmission Fluids

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Keep Your 1978 Dodge Diplomat in Top Shape with a Quality Transmission Fluid

When it comes to maintaining or upgrading your 1978 Dodge Diplomat, choosing high-quality parts is crucial for ensuring your vehicle stays in top shape, whether you’re tackling a repair or enhancing performance. At Advance Auto Parts, we know how important it is to find the right Transmission Fluid for your Diplomat. We currently carry a top Transmission Fluid in stock that is built to last. Whether you’re replacing a damaged Transmission Fluid or looking to upgrade, our selection for the 1978 Dodge Diplomat ensures you’ll find exactly what you need to keep your vehicle looking and performing its best.

A Reliable Transmission Fluid from a Trusted Brand

When it comes to trusted Transmission Fluid brands, we’ve got you covered. Our inventory features a Transmission Fluid from Valvoline, a brand you can count on. This Transmission Fluid starts at just $34.99 and has a rating of 5 stars from over 17 customer reviews. After you purchase your 1978 Dodge Diplomat Transmission Fluid you can scroll below to see options other Dodge Diplomat owners are loving. Even with only one Transmission Fluid in stock, you can be confident you’re getting the best option available and designed to fit your Diplomat perfectly, offering both functionality and style.

Explore Related Parts

And while you’re here, don’t forget to check out related part categories like Coolant/Antifreeze and Fluids to complete your upgrade or repair project. At Advance Auto Parts, we’re proud to offer the parts and expertise to keep your 1978 Dodge Diplomat running smoothly and looking great.

Essential 1978 Dodge Diplomat Transmission Fluids

Valvoline – Full Synthetic High Mileage 10W-30 Engine Oil, Maximizes Engine Life, 5 Quart (Part No.881170)

Full Synthetic High Mileage 10W-30 Engine Oil, Maximizes Engine Life, 5 Quart

from

$36.99
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 Protection: Valvoline Full Synthetic High Mileage Engine Oil is specially designed to protect engines with over 75,000 miles against wear, friction, heat, and deposits, ensuring a longer lifespan for your vehicle.
See More

Valvoline – ATF+4® Full Synthetic Automatic Transmission Fluid, 1 Gallon (Part No.883587)

ATF+4® Full Synthetic Automatic Transmission Fluid, 1 Gallon

from

$34.99
Valvoline ATF+4® is a full-synthetic transmission fluid specifically engineered to protect and prolong the life of (FCA) Fiat Chrysler automatic transmissions. It is officially licensed and approved by FCA and is fully back-serviceable and can be used wherever ATF+3, ATF+2 or ATF+ is specified. Recommended for use in the following applications: Mopar ATF+ MS 7176®, ATF+2® MS 7176, ATF+3 and ATF+4.

Product Features:
  • Formulated with full-synthetic base stocks and advanced additive technology to meet the challenging demands of automatic transmissions
  • Enhanced anti-shudder protection for smooth shifting and maximum power transfer
  • Developed with anti-wear technology to help improve transmission durability
  • Engineered with a proprietary blend of base oils and advanced additives to provide better oil flow at low temperatures and greater film protection at higher temperatures
See More

Valvoline – Advanced Full Synthetic 10W-30 Motor Oil, Maximizes Engine Life, 1 Quart (Part No.VV935)

Advanced Full Synthetic 10W-30 Motor Oil, Maximizes Engine Life, 1 Quart

from

$11.49
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
  • Enhanced Oil Stability: This motor oil resists oil breakdown 10 times better than industry standards, providing consistent performance and reliability.
  • Premium Additives: Contains premium anti-wear additives, superior antioxidants, and extra detergents to maintain engine health and efficiency.
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Valvoline – Daily Protection 5W-30 Synthetic Blend Motor Oil, Strong Fuel Efficiency, 5 Quart (Part No.881159)

Daily Protection 5W-30 Synthetic Blend Motor Oil, Strong Fuel Efficiency, 5 Quart

from

$29.99
Valvoline Daily Protection Motor Oil is specially formulated to exceed industry standards for wear, deposit and sludge protection to help keep engines running like new. Developed with high quality additives and premium base oils, it’s designed to flow easily at cold temperatures, reducing wear at startup and providing added protection against motor oil breakdown in tough conditions. For enhanced fuel efficiency, choose Daily Protection Synthetic Blend 5W-20 or 5W-30. Developed with low-friction technology to support strong fuel economy.

Product Features:
  • Extra wear protection designed to help keep automotive engine parts like new
  • Added detergents help protect against sludge and deposits
  • High quality additives resist motor oil breakdown in tough conditions
  • Low-friction formula supports strong fuel efficiency
  • Premium formulation flows easily at low temperatures reducing wear at start-up
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Valvoline – MaxLife 5W-30 Synthetic Blend Motor Oil, Prevents Engine Breakdown, 5 Quart (Part No.782256)

MaxLife 5W-30 Synthetic Blend Motor Oil, Prevents Engine Breakdown, 5 Quart

from

$31.99
75,000 miles is more than a mile marker. It’s a signal that your engine is ready for greater protection. That’s when you need Valvoline High Mileage with MaxLife Technology Motor Oil. Its exclusive formula is proven to maximize engine life in cars, trucks, and SUVs with over 75,000 miles. Our mixture is specially developed with a unique combination of synthetic and premium conventional oils to protect your high-mileage motor against wear, friction, heat, and deposits – the four major causes of engine breakdown and expensive repairs. Anti-wear additives defend critical engine components, advanced friction-fighting agents reduce heat and abrasion, added detergents clean the inside of your engine, and premium seal conditioners handle aging seals to prevent leaks. It fights sludge, corrosion and rust that can rob your engine of horsepower, fuel efficiency and longevity. From extreme temperatures and cold starts to stop-and-go traffic and frequent short trips, viscosity modifiers make sure the oil flows more easily, coats more completely, and resists thermal breakdown under even the most intense driving conditions. Its unique mixture curbs contaminants to keep high-mileage engines from burning and consuming oil that can foul spark plugs, creating higher emissions and causing your motor to run roughly.

Product Features:
  • MAXLIFE TECHNOLOGY PREVENTS engine breakdown with 40% better wear protection than the industry standard
  • REFRESH AGING SEALS AND PREVENT LEAKS with seal conditioners
  • REDUCE SLUDGE, DEPOSITS, CORROSION, AND RUST with added detergents – keep motors clean inside
  • ENHANCED FRICTION PERFORMANCE HELPS MAXIMIZE POWER with advanced friction-fighting agents
  • MEETS OR EXCEEDS ALL REQUIREMENTS of ILSAC GF-6A, API SP, API SN with SN PLUS, API SN
See More

Valvoline – High Mileage 5W-30 Full Synthetic Engine Oil, Prevents Leaks (Part No.881169)

High Mileage 5W-30 Full Synthetic Engine Oil, Prevents Leaks

from

$36.99
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 Protection: Valvoline Full Synthetic High Mileage Engine Oil is specially designed to protect engines with over 75,000 miles against wear, friction, heat, and deposits, ensuring a longer lifespan for your vehicle.
See More

Most Popular Manual Transmission Fluid for 1978 Dodge Diplomats

Enhance your 1978 Dodge Diplomat with this popular Manual Transmission Fluid we have in stock, for $34.99.

Valvoline – ATF+4® Full Synthetic Automatic Transmission Fluid, 1 Gallon (Part No.883587)

ATF+4® Full Synthetic Automatic Transmission Fluid, 1 Gallon

from

$34.99
Valvoline ATF+4® is a full-synthetic transmission fluid specifically engineered to protect and prolong the life of (FCA) Fiat Chrysler automatic transmissions. It is officially licensed and approved by FCA and is fully back-serviceable and can be used wherever ATF+3, ATF+2 or ATF+ is specified. Recommended for use in the following applications: Mopar ATF+ MS 7176®, ATF+2® MS 7176, ATF+3 and ATF+4.

Product Features:
  • Formulated with full-synthetic base stocks and advanced additive technology to meet the challenging demands of automatic transmissions
  • Enhanced anti-shudder protection for smooth shifting and maximum power transfer
  • Developed with anti-wear technology to help improve transmission durability
  • Engineered with a proprietary blend of base oils and advanced additives to provide better oil flow at low temperatures and greater film protection at higher temperatures
See More

Top-Rated Transmission Fluid Brands For Your 1978 Dodge Diplomat

When it comes to finding the perfect Transmission Fluid for your 1978 Dodge Diplomat, Advance Auto Parts has you covered with our Transmission Fluid from Valvoline. This popular brand is known for its exceptional customer ratings and competitive prices, under $34.99. Purchasing a Transmission Fluid from us here at Advance Auto Parts is a smart move for both you and your 1978 Dodge Diplomat, providing peace of mind with parts that meet or exceed OEM standards.

A Reliable Valvoline Transmission Fluid For Your 1978 Dodge Diplomat

If you’re looking for a top-quality Transmission Fluid for your 1978 Dodge Diplomat, Advance Auto Parts has exactly what you need with our Valvoline Transmission Fluids. This Transmission Fluid has both durability and a precision fit. Coming in at only $34.99, this is the perfect Transmission Fluid for your needs and budget. Valvoline Transmission Fluids for the 1978 Dodge Diplomat come highly rated, with over 1 customer reviews. Choosing a Valvoline Transmission Fluid from Advance Auto Parts is a smart move to ensure quality and value for your vehicle.
ATF+4® Full Synthetic Automatic Transmission Fluid, 1 Gallon
from $34.99
(1)
ATF+4® Full Synthetic Automatic Transmission Fluid, 1 Gallon
“Bought two of these gallon jugs to replace the transmission fluid as well as the transfer case fluid in a 2012 Jeep Grand Cherokee Laredo 3.6L V6. It ”

FAQs for 1978 Dodge Diplomat Transmission Fluids

What’s the price range for 1978 Dodge Diplomat Transmission Fluids?

We currently have just one Transmission Fluids for the 1978 Dodge Diplomat in stock: ATF+4® Full Synthetic Automatic Transmission Fluid, 1 Gallon and it costs $34.99.

Does Advance Auto Parts sell Transmission Fluids for other Dodge Diplomat model years?

Yes, we carry Transmission Fluids for 11 model years of Dodge Diplomats between 1977 and 1989. The following model years are the most popular for Transmission Fluid purchases: 1989, 1988, 1987, 1986, 1985, 1984, 1983, 1982, and 1981.

Does Advance Auto Parts sell Transmission Fluids for any other 1978 Dodge models?

Yes. We stock Transmission Fluids for 19 other popular 1978 Dodge models. Some of the most popular are 1978 Charger Transmission Fluids, 1978 Challenger Transmission Fluids, 1978 Colt Transmission Fluids, 1978 D150 Transmission Fluids, and 1978 D200 Transmission Fluids.

What are the top-rated Transmission Fluids that fit the 1978 Dodge Diplomat?

The one 1978 Dodge Diplomat Transmission Fluid we have in stock is the ATF+4® Full Synthetic Automatic Transmission Fluid, 1 Gallon. It is rated 5 stars and costs $34.99.

What types of Transmission Fluids do you sell for my 1978 Dodge Diplomat?

We currently have just 1 Transmission Fluid in stock for a 1978 Dodge Diplomat, and as of 11/2/25, it is a Manual Transmission Fluid.

Can I get help with 1978 Dodge Diplomat Transmission Fluid orders?

Contact our customer support team by chat or phone, through the help desk page, where you can find instant answers about Dodge Transmission Fluids and more.

What is your return policy for Dodge Diplomat Transmission Fluids?

Advance Auto Parts keeps returns simple. For new Dodge Diplomat Transmission Fluids and accessories, your online orders can be returned, in their original condition, within 45 days. For requirements, see the returns page.