Promt Parts logo
Promt Parts Cart
$0.00
NEW ZEALAND'S LARGEST MARINE PARTS STORE
Marine connect log in
SAME DAY DISPATCH: (Excludes weekends & public holidays) 10:28:53
BROWSE PRODUCTS ▾

18-9690-3

Sierra 10W-30 Full Synthetic 4-Stroke Marine Engine Oil 3.78 L

Availability: Stock Qty: 5+
$153.66 (excluding GST)
Or, 4 easy payments of $44.18 (including GST) with Buy 18-9690-3 with Afterpay.
Details:
Product Group: Oil/Lube and Engine Care
Product Sub Group: Four Stroke Oils
Product brand: Sierra

Description:

10W-30 FC-W Full Synthetic Marine Oil – 1 Gallon / 3.785L (18-9690-3)

Advanced full-synthetic protection for modern 4-stroke outboard and sterndrive engines.

This premium 10W-30 FC-W Full Synthetic Marine Oil is engineered from high-quality synthetic base oils and a carefully balanced additive system that exceeds NMMA FC-W performance requirements. Designed specifically for today’s 4-stroke outboard and sterndrive engine technology, it provides superior lubrication, exceptional temperature stability, and long-lasting protection in the harshest marine environments.
Its full-synthetic formulation delivers faster lubrication during cold starts, enhanced high-temperature protection, and increased oxidation resistance—helping reduce oil breakdown and consumption over time. Suitable for both outboard and sterndrive applications, it keeps engines running cleaner, smoother, and more efficiently season after season. Certified to NMMA FC-W standards and meeting API-SL specifications.

Key Features
- Full synthetic formula designed for 4-stroke outboard and sterndrive engines
- Special synthetic blend with advanced additives exceeding FC-W requirements
- Faster lubrication during cold starts and low-temperature operation
- Superior high-temperature protection for demanding marine conditions
- Increased oxidation resistance for reduced oil consumption and longer service life
- Recommended for both outboard and sterndrive applications
- NMMA FC-W Certified / API-SL compliant
- Bottle Size: 1 Gallon (3.785 L)
- Shipping box quantity = 4

OEM Interchange
- Mercury Marine: 8M0173224
- Quicksilver: 8M0175781

Related Videos

Questions & Answers

No questions have been asked on this item yet...

CONTINUE SHOPPING

Product Group
Product Sub Group
Brand

RECENTLY VIEWED

Yamaha Drain Screw Gasket x1
Yamaha Drain Screw Gasket x1