Oil - Engine - Marine Engine Oil 25W-40 One Quart
$14.99
Competitor Price:
$17.89
Synthetic blend 25W-40 engine oil is formulated for stern drive & inboard marine engines. One Quart
- Sierra synthetic blend inboard engine oil
- SAE 25W-40
- 1 quart bottle
- Recommended for gasoline inboard and I/O engines
- 4-stroke oil is a blend of premium grade synthetic and mineral based stock with highly refined additives
- Developed specifically for the marine environment and the high running stresses marine engines encounter
- Protects internal engine components from rust, corrosion, and from sticking piston rings
- Features high detergency, anti-oxidants, and antiwear proprties
- Prevents thermal breakdown under high RPM's, extreme temperatures, and high load conditions
- NMMA FC-W certified/API-SL
- Replaces Mercury 92-8M0078629
-
Replaces Sierra 18-9440-2
Most in-stock orders ship within 24 hours. Orders placed by 1:00 PM EST typically ship the same business day, subject to availability.
Average delivery time within the Continental U.S. is 3–7 business days.
Expedited shipping options are available on select products. Weekend delivery is not available.
Oversized items, drop-shipped products, and shipments to Alaska, Hawaii, or international destinations may require additional time or shipping costs.
Tracking information is emailed once your order ships.