Mercury Quicksilver 5W-40 Full Synthetic 4-Stroke ATV/UTV Engine Oil 8M0058914 – 1 Quart
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Mercury Quicksilver 5W-40 Full Synthetic 4-Stroke ATV/UTV Engine Oil – 1 Quart
Part Number: 8M0058914 (92-8M0058914)
Brand: Mercury / Quicksilver
Size: 1 US quart (946 mL / 32 oz)
GTIN: 745061887572
Product Overview
A full-synthetic SAE 5W-40 engine oil formulated for 4-stroke ATV and UTV engines, including modern fuel-injected and turbocharged applications. Designed to maintain strong film strength at high temperatures, provide rapid oil flow at cold starts, and resist shear and oxidation over extended service. Compatible with wet-clutch systems.
- Viscosity: SAE 5W-40
- Full synthetic formulation
- Suitable for air-cooled and liquid-cooled 4-stroke engines
- Wet-clutch compatible
- Resists shear and oxidation
- Meets or exceeds API SF / SG / SJ / SL / SM
Compatible Applications
- 4-stroke ATV engines requiring SAE 5W-40 full-synthetic oil
- 4-stroke UTV engines requiring SAE 5W-40 full-synthetic oil
- Fuel-injected powersports engines
- Turbocharged powersports engines
- Wet-clutch equipped powersports engines
Fitment Note: Confirm your vehicle manufacturer's required oil viscosity and specification before use. This is a 5W-40 powersports lubricant — not Mercury 25W-40 or 10W-30 marine FourStroke engine oil. Using the wrong viscosity can affect engine protection.
Service Interval
Use during scheduled engine-oil changes per your ATV or UTV manufacturer's maintenance schedule, or whenever a compatible SAE 5W-40 full-synthetic 4-stroke oil is specified.
Application Notes
- Drain and refill per the vehicle manufacturer's maintenance procedure
- Replace the oil filter where required
- Fill only to the manufacturer's specified capacity
- Verify oil level after service before operating the vehicle
Related Products
- Mercury 4-Stroke Marine Engine Oil – 25W-40, 1L | 8M0078639
- Quicksilver 4-Stroke Engine Oil – 4L | 8M0078634
- Mercury Synthetic Blend 4-Stroke Marine Engine Oil, 10W-30, 1 Qt – 8M0149203
Parts Desk Insights
The most common mix-up with this product is confusing it with Mercury's marine FourStroke engine oils. This is a 5W-40 ATV/UTV powersports oil — not a 25W-40 or 10W-30 marine oil. Always match the vehicle's required viscosity grade and specification. If your engine calls for 25W-40 or 10W-30, a different product is needed.
Shipping information
In-stock and OEM parts: ship same or next business day.
Locally warehoused items: ship within 1-3 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.