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.
The Sierra synthetic blend works well for my boat's sterndrive, but I think it’s a bit overpriced compared to other options. It does its job, and my engine runs fine, but I expected a little more for the cost. Still, I appreciate the quality and convenience of buying it in quarts.
C
Carlos Mendes
Great oil for my MerCruiser!
I’ve been using Sierra’s synthetic blend engine oil for my MerCruiser sterndrive, and I can definitely feel the difference. It runs smoother and quieter than before. Plus, I love that it comes in quart sizes because it makes it easier to manage the oil changes. Definitely sticking with this brand!
J
James O'Leary
Oil leaked during shipping
I’m not happy with my order of the Sierra engine oil. When it arrived, one of the quarts had leaked all over the packaging. It’s a good product, but I was disappointed with the delivery condition. I had to clean up a mess before I could even use it. Might consider a different supplier next time.
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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.
