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Schaeffers 10W30 Max MPG Synthetic Plus Diesel Engine Oil FA-4 1 Gallon

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Schaeffers 10W30 Max MPG Synthetic Plus Diesel Engine Oil FA-4 1 Gallon


Schaeffer's 6000 SynShield® Max MPG Diesel Engine Oil SAE10W-30 FA-4 (6-Gallons) is a premium, advanced performance, synthetic plus, heavy-duty diesel engine oil. It is specially formulated to provide maximum protection against wear, oxidation, deposit formation, soot contamination and aeration in 2017 and newer engines that specify an API FA-4 engine oil.

SynShield™ Max MPG SAE 10W-30 is formulated to offer:

  • Increased fuel economy benefits beyond those typically provided by most SAE 10W-30 engine oils.
  • Excellent wear protection.
  • Extended drain capability.
  • High temperature performance. 
  • Engine cleanliness. 

Blended into SynShield™ Max MPG SAE 10W-30 are two proven frictional modifiers, Micron Moly®, a liquid soluble type of moly, and Schaeffer’s own proprietary additive Penetro®. Once plated, these frictional modifiers form a long lasting, slippery, tenacious lubricant film. It will prevent metal-to-metal contact and damaging frictional wear.

SynShield™ Max MPG SAE 10W-30 meets and exceeds the following manufacturer’s specifications and requirements: API Service Classification FA-4; Cummins CES 20086; Detroit Diesel DDC93K223; JASO DH-2.

SynShield™ Max MPG SAE 10W-30 should only be used in heavy-duty on-road trucking applications where an API FA-4 oil is recommended by the OEM. Before using SynShield™ Max MPG SAE 10W-30, users should consult the engine oil recommendations as shown in an owner’s manual or other service bulletins.

Coops shipping and returns policy is as customer freindly as we can make, We want our customers to trust if your part is not exactly what you want we will make it right.
Returns Policy

You may return most new, unopened items within 30 days of delivery for a full refund. We'll also pay the return shipping costs if the return is a result of our error (you received an incorrect or defective item, etc.).

You should expect to receive your refund within four weeks of giving your package to the return shipper, however, in many cases you will receive a refund more quickly. This time period includes the transit time for us to receive your return from the shipper (5 to 10 business days), the time it takes us to process your return once we receive it (3 to 5 business days), and the time it takes your bank to process our refund request (5 to 10 business days).

If you need to return an item, please Contact Us with your order number and details about the product you would like to return. We will respond quickly with instructions for how to return items from your order.


We can ship to virtually any address in the world. Note that there are restrictions on some products, and some products cannot be shipped to international destinations.

When you place an order, we will estimate shipping and delivery dates for you based on the availability of your items and the shipping options you choose. Depending on the shipping provider you choose, shipping date estimates may appear on the shipping quotes page.

Please also note that the shipping rates for many items we sell are weight-based. The weight of any such item can be found on its detail page. To reflect the policies of the shipping companies we use, all weights will be rounded up to the next full pound.

Coops Custom offers custom products and custom bundles with certain products, if you have a major project and you need more than one part please contact us at 800-214-6218.

Fender Flares: Available in color match colors.
Colored Matched Bud Shields: Most of our AVS bug shield are avialble in color match.
Power Combos: We offer bundles of tuners, exhausts and air intakes.
wheels and Tires: Coops offers mounted and balanced Wheel and Tire Combos.

Coops Customs General Aftermarket Auto Part FAQ.

  • Will This Void My Warranty?
    Most aftermarket parts that do not delete emissions will not void any warranty under the Magnuson Moss Act.
  • Who is Coops Customs?
    Coops Customs is a family owned business since 2007. Zac Cooper started Coops with his knowledge of aftermarket accessories and love of customizing his vehicles.
  • Do you accept returns?
    Yes. We will take any return within reason. Coops wants our customers to shop with confidence knowing no matter what we will make sure your happy.
  • Do I have to pay for shipping if this part doesnt fit?
    No. If you have a problem with fitment Coops will provide customer service to get you the correct part and pay to return your incorrect part.
  • How fast do you ship out products?
    We do a amazing job of working on a 99% same day ship rate. If you order is in by 2PM CST you can expect a tracking number the same day.
  • What methods of payment do you take?
    We accept all major credit cards, paypal, google pay, amazon pay and apple pay.
  • Can I pick my item up?
    Yes. Unlike some other online retailers Coops Custom is a actually store.
    Coops Customs is located at 107 W Ryder St, Litchfield, IL 62056
  • Do you save my credit card info.
    No way. We do not store any customers personal payment info.
  • Why shop at Coops?
    We still believe in family businesss and supporting the smaller guys. Coops wants to earn your business with greats prices, in stock products and the best customer service around.
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