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Description
mercury high performance gear lube Mercury 8M0078015 Racing Gear Lube 85W-90 — 1 QuartMercury 8M0078015 Racing (Extreme Performance) Gear Lube 85W 90, 1 Quart Genuine Mercury Racing gear lube (8M0078015) formulated at SAE 85W 90 for high load, high heat marine gearcases. Its tackifiers and pressure additives help maintain a protective oil film under extreme thrust loads, while advanced emulsifiers provide protection even if water enters the gear housing. Applications For high performance outboard and sterndrive gearcases that specify
Mercury 8M0078015 — Racing (Extreme Performance) Gear Lube 85W-90, 1 Quart
Genuine Mercury Racing gear lube (8M0078015) formulated at SAE 85W-90 for high-load, high-heat marine gearcases. Its tackifiers and pressure additives help maintain a protective oil film under extreme thrust loads, while advanced emulsifiers provide protection even if water enters the gear housing.
Applications
For high-performance outboard and sterndrive gearcases that specify 85W-90 Mercury Racing/Extreme Performance gear lube. Typical use includes performance gearcases on Mercury/MerCruiser platforms. Always confirm the required lubricant in your owner’s or service manual before filling.
Shipping & Returns
Fast processing and shipping from our marine parts warehouse. 30-day returns on unopened, unused items. Review our Refund Policy for full details.
Key Facts
- Part Number: 8M0078015
- Viscosity: SAE 85W-90
- Type: Racing / Extreme Performance marine gear lube
- Bottle Size: 1 quart
- UPC: 745061915206
- Benefits: Wear protection, heat stability, and resistance to water intrusion
- Category: Oils & Lubricants › Gear Lubes
What’s Included
- 1 × Mercury Racing (Extreme Performance) Gear Lube 85W-90, 1-quart bottle (8M0078015)
Service Notes
- Service per your manual: fill from the drain until oil exits the vent; install new drain screw seals and torque fasteners to spec.
- Use a compatible gear-lube pump for clean, complete fills; verify thread size for your gearcase.
- After filling, run briefly, recheck level, and inspect for leaks; dispose of used lubricants responsibly.
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
- Standard Shipping : 3-10 business days
- If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
- To process your return/exchange, please contact us at [email protected]
- Please click here for more details>>> Return & Exchange Policy
4.6 ★★★★★
Based on 1418 reviews
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Product Reviews
★★★★★ 5
Excellent RV Extension Cord – Heavy Duty Quality and Best Value for Power Needs!
Size: 25-Foot, Style: 90° Locking End
The Camco Power Grip 25-Ft 50 Amp RV Extension Cord has been absolutely essential for our RV camping adventures! As full-time RVers who frequently encounter campground electrical pedestals that are inconveniently located, this heavy-duty extension cord has solved countless site setup challenges. The 50 amp capacity handles our RV's full electrical load including air conditioning, and the 25-foot length gives us the flexibility to position our rig exactly where we want it.
What impressed me most is the exceptional build quality and safety features. The cord feels substantial and professional-grade, clearly designed to handle the demanding electrical requirements of modern RVs. The 90° locking end is genius—it keeps the connection secure and reduces strain on both the cord and the pedestal connection, which is especially important during windy conditions or when other campers accidentally bump into it.
The Power Grip handles make connecting and disconnecting so much easier and safer, especially in wet conditions or when wearing gloves. The cord is rated for 125/250V and 12,500W, giving me complete confidence that it can safely handle our RV's maximum electrical demands without overheating or voltage drop issues that can damage sensitive electronics.
For such a heavy-duty, professional-quality 50 amp RV extension cord with excellent safety features, the price was absolutely the best value I found anywhere. RV dealers charge much more for comparable cords with fewer features. I'm very likely to buy a second one as backup and have recommended it to fellow RVers in our camping group. This cord has made campground electrical connections so much more convenient and reliable! Solid 5 stars!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on November 30, 2025
★★★★★ 5
Good Quality Cable
Size: 25-Foot, Style: 90° Locking End
Good quality and durable product. We replaced the OEM cable to our RV and have been very happy with its performance.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on July 20, 2025
★★★★★ 5
Great power cord
Size: 25-Foot, Style: 90° Locking End
I'm very happy with the quality of this power cord. The one that came with my RV came straight out of the side and 50 amp cables are heavy. This cord has a 90 degree end that takes away the leverage factor of the other one. This should be much easier on the RV wall connector. Well worth the cost.
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Reviewed in the United States on May 1, 2024
★★★★★ 5
Good RV Power Supply Cord
Size: 25-Foot, Style: 90° Locking End
It's an overall good value for the cord. I purchased so I'd have a spare in the rv and because my original is very short, I may need the extra length one day. I plugged it in and it works as intended, it appears to be good construction and quality materials.
I've been caught in a situation before where my cord went bad (the inlet on the camper overheated and caused the plug in the melt and burn up, this could happen to anyone) it was after hours, so I couldnt run to a store and get one. Had to suffer through the night with no AC and wait until the next morning to go to an RV superstore and pay double what Amazon charges. If you take your rv out alot I highly recommend keeping a spare cord.
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Reviewed in the United States on July 16, 2020
★★★★★ 5
Great product! I do not understand why anyone would make or buy any cord without a 90 degree plug-in for their RV.
Size: 25-Foot, Style: 90° Locking End
We had to replace the plug on our RV: The plug was destroyed by the stiff 50 amp cord that; came with our RV that put a lot of pressure on the plug-in on our RV causing it to arc and melt both the male and female where the cord was plugged into the RV. . The heavy duty 90: degree end has a soft flexible cable and greatly reduces the stress on the RV plug. I expect this cord will last much longer. Would recommend this cord to anyone. I do not understand why anyone would make or buy any cord without a 90 degree plug-in for their RV. Dealers may not have this item in stock.
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Reviewed in the United States on July 14, 2018
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