1978 GMC K15 Transmission Fluids

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Keep Your 1978 GMC K15 in Top Shape with Quality Transmission Fluids

Whether you’re repairing or upgrading your Transmission Fluid, using high-quality parts is key to keeping your 1978 GMC K15 looking sharp and performing at its best. At Advance Auto Parts we carry a wide selection of dependable options, including Dual Clutch Transmission Fluids and Manual Transmission Fluids. Whether you’re replacing a damaged part or enhancing your truck’s style and protection, you’ll find exactly what you need to get the job done right.

Top-Rated Transmission Fluids from Trusted Brands

Looking for a reliable Transmission Fluid? We’ve got you covered with options from brands you know and trust like Valvoline. For example, Valvoline Transmission Fluids start at just $15.99 with an average 4.8 star rating. With over 1,792 reviews and a solid 5.0 star average, you can shop with confidence knowing other GMC K15 owners approve.

Explore Related Parts

While you’re upgrading or replacing your Transmission Fluid, don’t forget to check out other key components like Coolant/Antifreeze and Fluids. At Advance Auto Parts, we’re here to help you keep your 1978 GMC K15 in peak condition, inside and out.

Essential 1978 GMC K15 Transmission Fluids

Valvoline – Valvoline MaxLife Multi-Vehicle Automatic Transmission Fluid, 1 Gallon, 773775 (Part No.773775)

Valvoline MaxLife Multi-Vehicle Automatic Transmission Fluid, 1 Gallon, 773775

from

$39.99
Valvoline MaxLife Multi-Vehicle ATF is a full-synthetic formulation with advanced additives to prevent the major causes of transmission breakdown and help extend transmission life. Developed to help prevent leaks, maximize transmission performance, reduce transmission wear, and maintain smooth shifting longer than conventional fluids. It is suitable for use in a broad range of ATF applications including most Ford, GM, Toyota, Honda, Nissan, Hyundai, BMW, Mercedes, Volvo, VW & Audi. Volume: 1 gallon.
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Valvoline – Valvoline DEXRON – VI ATF Full Synthetic Automatic Transmission Fluid, 1 Quart, 822405 (Part No.822405)

Valvoline DEXRON - VI ATF Full Synthetic Automatic Transmission Fluid, 1 Quart, 822405

from

$15.99
Valvoline DEXRON-VI/MERCON LV ATF is a full-synthetic transmission fluid formulated with advanced additive technology to meet and exceed the requirements of the General Motors DEXRON-VI specification. It is officially licensed and approved by GM and is fully back-serviceable and can be used wherever DEXRON-II and/or DEXRON-III are recommended. Recommended for use in the following applications: DEXRON-VI, DEXRON-III, DEXRON-II, and Allison C-4. Volume: 1 quart.
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Valvoline – Valvoline MaxLife Multi-Vehicle (ATF) Full Synthetic Automatic Transmission Fluid, 1 Quart, 904857 (Part No.904857)

Valvoline MaxLife Multi-Vehicle (ATF) Full Synthetic Automatic Transmission Fluid, 1 Quart, 904857

from

$13.99
Valvoline Full Synthetic MaxLife Multi-Vehicle ATF, the No. 1 ATF product, suitable for use in millions of vehicles. Featuring advanced additives to prevent the major causes of transmission breakdown, it’s designed to help prevent leaks, reduce wear & tear, and maximize performance. Has improved thermal stability for longer fluid life, better viscosity stability for consistent transmission operation, and frictional enhancements for smooth gear engagements. Valv MaxLife Multi-Vehicle ATF is recommended for use in: GM DEXRON-II, DEXRON-III, DEXRON-VI; Ford MERCON LV; and JASO M315-2013 1A-LV. Volume: 1 quart.
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Most Popular Dual Clutch Transmission Fluid for 1978 GMC K15s

Enhance your 1978 GMC K15 with this popular Dual Clutch Transmission Fluid we have in stock, for $13.99.

Valvoline – Valvoline MaxLife Multi-Vehicle (ATF) Full Synthetic Automatic Transmission Fluid, 1 Quart, 904857 (Part No.904857)

Valvoline MaxLife Multi-Vehicle (ATF) Full Synthetic Automatic Transmission Fluid, 1 Quart, 904857

from

$13.99
Valvoline Full Synthetic MaxLife Multi-Vehicle ATF, the No. 1 ATF product, suitable for use in millions of vehicles. Featuring advanced additives to prevent the major causes of transmission breakdown, it’s designed to help prevent leaks, reduce wear & tear, and maximize performance. Has improved thermal stability for longer fluid life, better viscosity stability for consistent transmission operation, and frictional enhancements for smooth gear engagements. Valv MaxLife Multi-Vehicle ATF is recommended for use in: GM DEXRON-II, DEXRON-III, DEXRON-VI; Ford MERCON LV; and JASO M315-2013 1A-LV. Volume: 1 quart.
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Best-Selling 1978 GMC K15 Manual Transmission Fluids

Upgrade your K15 with one of our 2 best-selling Manual Transmission Fluids, earning an average 5 stars rating across 448 reviews.

Valvoline – Valvoline MaxLife Multi-Vehicle Automatic Transmission Fluid, 1 Gallon, 773775 (Part No.773775)

Valvoline MaxLife Multi-Vehicle Automatic Transmission Fluid, 1 Gallon, 773775

from

$39.99
Valvoline MaxLife Multi-Vehicle ATF is a full-synthetic formulation with advanced additives to prevent the major causes of transmission breakdown and help extend transmission life. Developed to help prevent leaks, maximize transmission performance, reduce transmission wear, and maintain smooth shifting longer than conventional fluids. It is suitable for use in a broad range of ATF applications including most Ford, GM, Toyota, Honda, Nissan, Hyundai, BMW, Mercedes, Volvo, VW & Audi. Volume: 1 gallon.
See More

Valvoline – Valvoline DEXRON – VI ATF Full Synthetic Automatic Transmission Fluid, 1 Quart, 822405 (Part No.822405)

Valvoline DEXRON - VI ATF Full Synthetic Automatic Transmission Fluid, 1 Quart, 822405

from

$15.99
Valvoline DEXRON-VI/MERCON LV ATF is a full-synthetic transmission fluid formulated with advanced additive technology to meet and exceed the requirements of the General Motors DEXRON-VI specification. It is officially licensed and approved by GM and is fully back-serviceable and can be used wherever DEXRON-II and/or DEXRON-III are recommended. Recommended for use in the following applications: DEXRON-VI, DEXRON-III, DEXRON-II, and Allison C-4. Volume: 1 quart.
See More

Top-Rated Transmission Fluid Brands For Your 1978 GMC K15

When it comes to finding the perfect Transmission Fluid for your 1978 GMC K15, Advance Auto Parts has you covered with a wide selection of high-quality OEM and aftermarket options from 1 trusted brands. We carry the most popular Transmission Fluid brands including Valvoline, and more, all known for their exceptional customer ratings (average brand rating of 4.8 stars) and competitive prices, as low as $15.99. Purchasing a Transmission Fluid from us here at Advance Auto Parts is a smart move for both you and your 1978 GMC K15, providing peace of mind with parts that meet or exceed OEM standards.

Popular Valvoline 1978 GMC K15 Transmission Fluids

If you’re looking for a top-quality Transmission Fluid for your 1978 GMC K15, Advance Auto Parts has exactly what you need with our selection of Valvoline Transmission Fluids. We have 2 Valvoline Transmission Fluids in stock for this fitment, all known for their durability and precision fit. With prices starting at just $15.99 and an average cost of $27.99, you’ll find the perfect Transmission Fluid for your needs and budget. Valvoline Transmission Fluids for the 1978 GMC K15 come highly rated, with over 448 customer reviews and an impressive average rating of 4.8 stars. Choosing a Valvoline Transmission Fluid from Advance Auto Parts is a smart move to ensure quality and value for your vehicle.
Valvoline DEXRON - VI ATF Full Synthetic Automatic Transmission Fluid, 1 Quart, 822405
from $15.99
(2)
Valvoline DEXRON – VI ATF Full Synthetic Automatic Transmission Fluid, 1 Quart, 822405
“I’ve used this in my 2005 2500HD since I bought the truck with 20k on it now at 280k changed every other year maybe 40k I’d put on in two years, I pu”

FAQs for 1978 GMC K15 Transmission Fluids

What are the best-selling Transmission Fluids for 1978 GMC K15s?

Out of 3 Transmission Fluids that fit 1978 GMC K15s, the following parts are the top sellers:

What’s the price range for 1978 GMC K15 Transmission Fluids?

The prices of Transmission Fluids for the 1978 GMC K15 range from $13.99 up to $39.99 for the most premium parts.

What is the average price of a Transmission Fluid for a 1978 GMC K15?

The average price for Transmission Fluids for the 1978 GMC K15 is $23.32. Keep in mind the variety of part types within our Transmission Fluid category, where you are likely to find a wide range of prices across a variety of parts and components.

Does Advance Auto Parts sell Transmission Fluids for other GMC K15 model years?

Yes, we carry Transmission Fluids for 2 model years of GMC K15s between 1975 and 1977. The following model years are the most popular for Transmission Fluid purchases: 1977, 1976, and 1975.

What are the cheapest Transmission Fluids for my 1978 GMC K15?

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

Yes. We stock Transmission Fluids for 12 other popular 1978 GMC models. Some of the most popular are 1978 Jimmy Transmission Fluids, 1978 Caballero Transmission Fluids, 1978 K25 Transmission Fluids, 1978 G25 Transmission Fluids, and 1978 C25 Transmission Fluids.

What are the top-rated Transmission Fluids that fit the 1978 GMC K15?

The one 1978 GMC K15 Transmission Fluid we have in stock is the Valvoline MaxLife Multi-Vehicle (ATF) Full Synthetic Automatic Transmission Fluid, 1 Quart, 904857. It costs $13.99.

What types of Transmission Fluids do you sell for my 1978 GMC K15?

As of 9/14/26, these are some of the most in-demand types of Transmission Fluids for a 1978 GMC K15:

Can I get help with 1978 GMC K15 Transmission Fluid orders?

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

What is your return policy for GMC K15 Transmission Fluids?

Advance Auto Parts keeps returns simple. For new GMC K15 Transmission Fluids and accessories, your online orders can be returned, in their original condition, within 45 days. For requirements, see the returns page.