Sierra 95513 10W-40 FC-W Synthetic Blend 4-Cycle Marine Engine Oil – 1 Gal.
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Sierra 95513 10W-40 FC-W Synthetic Blend Marine Engine Oil – 1 Gal.
A 1-gallon jug of Sierra’s 10W-40 synthetic blend marine engine oil, meeting both NMMA FC-W and API SL certifications. Formulated for 4-cycle outboard and inboard engines operating without a catalytic converter, this oil maintains a stable viscosity film across a wide temperature range while delivering elevated rust and corrosion inhibitors suited to both saltwater and freshwater environments. The synthetic blend base provides strong shear stability and high-load bearing protection under sustained wide-open-throttle use.
The 1-gallon format is a practical choice for boaters who perform their own seasonal oil changes or want a reliable top-up supply on board without the bulk of a larger container.
Specifications
- Part Number: 95513
- Viscosity: 10W-40
- Certification: NMMA FC-W / API SL
- Engine type: 4-cycle outboard and inboard (non-catalytic converter)
- Volume: 1 US gallon (~3.8 L)
- Base: Synthetic blend
- Weight: 3.7 kg (8.1 lb)
Parts Desk Insights
Best use case: The gallon jug is the most versatile format in the 10W-40 FC-W line — enough volume for a full oil change on most mid-size 4-stroke outboards, with enough left over for a top-up between services. If you only need a quart for a top-up or a partial change, see the Sierra 95512 10W-40 FC-W Oil – Quart. For high-volume shop or fleet use, the Sierra 95517 10W-40 FC-W Oil – 55 Gal. Drum offers the best per-litre value. Not intended for 2-stroke engines or engines equipped with catalytic converters.
Shipping information
In-stock and OEM parts: ship same or next business day.
Locally warehoused items: ship within 3–4 business days.
Special-order items: timeline confirmed after order.
Returns & warranty
Returns & Satisfaction Guarantee
We stand firmly behind the quality of every product we sell. Your confidence matters to us — and we back it with a straightforward 30-Day Satisfaction Guarantee.
If you are not fully satisfied, you may request a return within 30 days of delivery. All returns must receive pre-approval prior to being sent back. Unauthorized returns will not be accepted.
To qualify for a return:
Item must be in new, unused condition
Product must be in its original packaging
All parts, components, hardware, manuals, and accessories must be included
Packaging must be undamaged and suitable for resale
Important:
Electronics are strictly inspected. No returns on open-box electronics. Exceptions may apply only with prior written approval. Any electronic unit that has been installed, powered, activated, or altered may not be eligible for return.
We are serious about product integrity — and equally serious about taking care of our customers. If there is ever a product issue, contact us immediately so we can make it right.
For return authorization, please contact our support team before shipping anything back.