Welcome Offer : Use Code WELCOME5 for 5% OFF your first order!
Free Shipping Across USA
Welcome Offer : Use Code WELCOME5 for 5% OFF your first order!
Free Shipping Across USA
Welcome Offer : Use Code WELCOME5 for 5% OFF your first order!
Free Shipping Across USA
Welcome Offer : Use Code WELCOME5 for 5% OFF your first order!
Free Shipping Across USA
Welcome Offer : Use Code WELCOME5 for 5% OFF your first order!
Free Shipping Across USA
Welcome Offer : Use Code WELCOME5 for 5% OFF your first order!
Free Shipping Across USA
Welcome Offer : Use Code WELCOME5 for 5% OFF your first order!
Free Shipping Across USA
Welcome Offer : Use Code WELCOME5 for 5% OFF your first order!
Free Shipping Across USA
Welcome Offer : Use Code WELCOME5 for 5% OFF your first order!
Free Shipping Across USA
Welcome Offer : Use Code WELCOME5 for 5% OFF your first order!
Free Shipping Across USA
- No EU import duties. - Ships within 3-5 business days. (USA) - Ships with 8-12 business days. (International)
⚠️ 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.
18-9400-2 Size: 1 Pint Features: -Stern Drive And Inboard Engines Operate Under High Load And Running Stresses. -Developed For The Marine Environment And Will Out Perform Standard 4-Cycle Autom. -Has Been Formulated To Provide Excellent Lubrication And Corrosion Protection. -Made In The Usa. Product Type: -Machine Oils. Generic Specifications: -25W40 Stern Drive.
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.
Frequently Asked Questions
Q: What type of engines is the Sierra Supply Oil 25W40 suitable for?A: The Sierra Supply Oil 25W40 is specifically formulated for stern drive and inboard engines, making it ideal for marine applications where engines operate under high load and stress.
Q: What are the benefits of using Sierra Supply Oil 25W40 compared to standard motor oils?A: Sierra Supply Oil 25W40 is designed to outperform standard 4-cycle automotive oils, providing excellent lubrication and corrosion protection in demanding marine environments.
Q: What is the volume of the Sierra Supply Oil 25W40?A: The Sierra Supply Oil 25W40 is available in a one-quart size, which is equivalent to approximately 1 liter or 0.26 gallons.
Q: How often should I change the oil in my marine engine using Sierra Supply Oil 25W40?A: It's recommended to follow the manufacturer's guidelines for oil change intervals, but generally, for marine engines, oil changes should occur at least once a season or after 100 hours of operation, whichever comes first.
Q: Is Sierra Supply Oil 25W40 a synthetic or conventional oil?A: Sierra Supply Oil 25W40 is a premium blend motor oil, designed to provide superior performance and protection for marine engines compared to conventional oils.
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