Welcome Offer : Use Code WELCOME5 for 5% OFF!
Free Shipping on Most USA Orders
Welcome Offer : Use Code WELCOME5 for 5% OFF!
Free Shipping on Most USA Orders
Welcome Offer : Use Code WELCOME5 for 5% OFF!
Free Shipping on Most USA Orders
Welcome Offer : Use Code WELCOME5 for 5% OFF!
Free Shipping on Most USA Orders
Welcome Offer : Use Code WELCOME5 for 5% OFF!
Free Shipping on Most USA Orders
Welcome Offer : Use Code WELCOME5 for 5% OFF!
Free Shipping on Most USA Orders
Welcome Offer : Use Code WELCOME5 for 5% OFF!
Free Shipping on Most USA Orders
Welcome Offer : Use Code WELCOME5 for 5% OFF!
Free Shipping on Most USA Orders
Welcome Offer : Use Code WELCOME5 for 5% OFF!
Free Shipping on Most USA Orders
Welcome Offer : Use Code WELCOME5 for 5% OFF!
Free Shipping on Most USA Orders
⚠️ California Proposition 65 Warning : Some products sold on this website may expose you to chemicals known to the State of California to cause cancer, birth defects, or other reproductive harm.
For more information, visit www.P65Warnings.ca.gov.
From farm and construction equipment to on-highway fleets, heavy workloads and hauling, Valvoline Heavy Duty Diesel Synthetic Blend 15W-40 Engine Oil is specially formulated with targeted additive technology for engines operating in extreme duty cycles or severe environmental contamination conditions. Proven to maximize diesel engine life, our latest heavy duty diesel synthetic blend lubricant is engineered to control wear, deposits and oil breakdown while providing enhanced viscosity and oxidation stability. No matter the weather, you can count on excellent year-round performance in Cummins, Volvo, Mack, Ford, Caterpillar, Detroit Diesel engines and more. For superior wear protection in harsh environments and extreme applications, trust Valvoline Heavy Duty Diesel Synthetic Blend 15W-40 Engine Oil to keep your vehicles working as hard as you do.
The oil itself seems good, I noticed improved engine performance after switching to this Valvoline blend. However, the case took longer to arrive than I expected, which was a little frustrating. Just plan ahead if you need it quickly.
C
Carlos Mendez
Great oil for my truck!
I've been using Valvoline's heavy-duty synthetic blend for my diesel truck and it's been a solid performer. My engine runs smoother, and the 15W-40 weight is perfect for the hot summers here. Plus, getting a case of three is super convenient!
S
Samantha Lee
Best oil I’ve used for my diesel engine!
Valvoline never disappoints! This synthetic blend keeps my diesel engine in great condition. I drive long distances, and the 15W-40 viscosity handles the stress perfectly. Plus, the case of three is economical for me. Definitely sticking with this oil!
R
Raj Patel
Not impressed, color looked different
I bought this oil believing it would be top quality based on the brand name, but my oil ended up being darker than I anticipated. It still works fine, but I wish I had a better visual confirmation before using it. Not sure I would buy again.
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FAQs
Have a question ? We are here to help.
Is the shipping free?
Yes, we offer free standard shipping on all orders within the United States.
When will I receive my item?
Domestic orders typically arrive within 3-5 business days. Delivery times are estimated and may vary depending on your location, weather conditions, or other unforeseen factors.
Can I change or return my item?
We hope you love your purchase, but if you need to make a change or return your item, we’ve got you covered! You can initiate a return or exchange within 30 days of receiving your order. Please ensure the product is in its original condition and packaging. For more information on our return policy, please visit our Returns & Exchanges page.
