Engine performance and reliability are key to a successful day fishing or boating. High-rpm operation and constant exposure to water, however, invite engine wear and formation of rust and corrosion, reducing engine performance and life. AMSOIL 25W-40 Synthetic Blend Marine Engine Oil guards against wear while delivering excellent protection against rust and corrosion. It is Warranty Secure® and will not void your marine engine’s warranty.
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Terms & Conditions
Offer valid for AMSOIL Preferred Customers and online/catalog customers in good standing.
Valid from 9 a.m. Central March 22 through 11:59 p.m. Central April 11, 2023.
To redeem, enter code CC032349 for free shipping and CC03235P for one $5 12-ounce bottle of P.i.® Performance Improver gasoline additive (APICN) at checkout.
Code CC032349 will automatically apply free shipping, if eligible, in cart at checkout.
Code CC03235P will automatically apply P.i.-price adjustment, if eligible, at checkout.
Offers can be combined.
Free-shipping offer applies only to orders of $49 or more based on subtotal with savings.
One $5 12-ounce bottle of P.i® Performance Improver (APICN) offer applies only to orders of $49 or more based on subtotal with savings.
Preferred Customer membership does count toward minimum order threshold.
Offer may be modified or terminated at any time except as prohibited by law.
Taxes, shipping and handling do not qualify for purchase requirement.
Offer not valid on previous purchases or for cash or gift cards.
Items that require additional shipping charges are excluded from free ground shipping.
Offer not valid for Alaska and Hawaii.
Available while supplies last.
Terms & Conditions
Offer valid for AMSOIL Preferred Customers and online/catalog customers in good standing.
Valid from 9 a.m. Central March 22 through 11:59 p.m. Central April 11, 2023.
To redeem, enter code CC032349 for free shipping and CC03235P for one $5 12-ounce bottle of P.i.® Performance Improver gasoline additive (APICN) at checkout.
Code CC032349 will automatically apply free shipping, if eligible, in cart at checkout.
Code CC03235P will automatically apply P.i.-price adjustment, if eligible, at checkout.
Offers can be combined.
Free-shipping offer applies only to orders of $49 or more based on subtotal with savings.
One $5 12-ounce bottle of P.i® Performance Improver (APICN) offer applies only to orders of $49 or more based on subtotal with savings.
Preferred Customer membership does count toward minimum order threshold.
Offer may be modified or terminated at any time except as prohibited by law.
Taxes, shipping and handling do not qualify for purchase requirement.
Offer not valid on previous purchases or for cash or gift cards.
Items that require additional shipping charges are excluded from free ground shipping.
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