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Add to CartSierra 10W-30 Synthetic Blend Engine Oil is formulated specifically for 4-stroke outboard and sterndrive engine technology. The special blend of synthetic base oil and a balanced additive system exceeds FC-W requirements and provides excellent protection at high temperatures. This superior protection works under heavy engine loads and offers faster lubrication at start up.
Note: Do NOT mix with gas - NOT for use in 2 cycle premix or injection engines.
Features:
California Residents: 
WARNING
Cancer and Reproductive Harm -
P65Warnings.ca.gov
Other Details
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