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Ryanw10

05-12-2025 07:49 PM

OMC King Cobra Fluid

Anyone have experience with merc sae 90 gear lube in a cone clutch OMC king cobra? I have used the ultra hpf before and the volvo penta 80-90, but the ultra hpf is hard to find and the volvo penta is almost double the price of what I can get the merc gear lube for.

liberator221

05-13-2025 06:24 AM

If it's a true King Cobra it has a cone clutch that's different than a Bravo. Additives in Merc fluid don't play well with clutch. Synthetic 90 like goes in Volvo outdrives is what you want I believe.

Ryanw10

05-13-2025 08:44 AM

Quote:

Originally Posted by liberator221 (Post 4926082)

Thank you. Definitely a true king cobra with a cone clutch as i rebuilt it a couple years ago. Manual calls for the OMC hi-Vis Fluid

Fstboater1

09-04-2025 10:56 PM

lube

I just run Mercury HP lube with no problems.

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