This OEM Mercury Quicksilver DFI 2-Cycle Oil (1 Gallon) is specifically engineered for Direct Fuel Injection (DFI) and OptiMax outboard engines.
Developed by Mercury Marine for high-performance 2-stroke applications, it delivers exceptional lubrication, cleanliness, and deposit control while minimizing carbon buildup in injectors and pistons.
Formulated to withstand extreme operating pressures and temperatures, this premium oil ensures cleaner combustion, reduced smoke, and extended engine life.
Replaces OEM part number 858037Q01 and meets all Mercury factory requirements for OptiMax, Pro XS, and DFI 2-stroke outboards.
Product Features
- Manufacturer: Mercury Marine (OEM)
- Application: Mercury OptiMax and DFI 2-Cycle outboards
- Type: Quicksilver DFI 2-Cycle Engine Oil
- Size: 1 Gallon (128 oz)
- OEM Part #: 858037Q01
- Cross Reference #: 8M0061418, 8M0075302, 8M0229796, 8M0229798, 8M0229799, 8M0230194, 857489A01, 858037KC1, 858037K01, 858037QB1, 858037QC1, 858037Q01, 877694K1, 877694Q1, 883701A01
- Performance: Low-smoke, high-temperature protection, and carbon-control additive system
- Compatibility: Designed for all Mercury OptiMax, Pro XS, and DFI engines
- Condition: 100% brand-new genuine Mercury OEM lubricant
- Warranty: Covered under Mercury Marine’s limited parts warranty
Additional Information
Note: Use exclusively in Mercury or Mariner DFI 2-stroke outboards.
Provides outstanding protection under sustained high RPM and heavy load operation.
Do not mix with non-Mercury oils to maintain full performance and compliance with manufacturer specifications.
Shipping Information
SHIPPING: Additional shipping fees to Alaska, Hawaii, U.S. Territories, or international destinations will be calculated after checkout.
You will receive an email and a PayPal money request for the additional shipping charges at the email address provided.
(Some items are excluded from international shipping.)
Customer Support
For questions or to confirm compatibility, please email customerservice@marinepartswarehouse.com .
Please include your engine model and serial number to verify correct oil selection before ordering.
