Mercury Performance Blended Oil Question?

[rockettman]

I have a 1994 Mercury 2.5L CaRB with 1hr on fresh rebuild done personally. I have about 10 gallons of the Mercury Performance Blended oil Part # 92-813743a2 and was wondering if it would be alright to use this oil blend in a fishin motor not intended for race? Otherwise i will use the Quicksilver Premium plus that i have been using. Any experience out there with using this oil other than for race let me know. Josh

[Jay Smith]

IMO I'd give it some more time on the petrolium oil if it were my motor...

good luck,

[86vintage]

They talk about the synthetics being to good to let the rings bed in. It is recommended to run a conventional petrolium base oil for the for the break-in then switch over to the synthetic blends. I run a 40:1 synthetic on my fishin 2.5 Merc.
Very happy with it and the color of my spark plugs, also recently put on high compression heads and the cylinder bores looked great with next no carbon build-up on the domes of the pistons or in the exhaust chest.
Good luck!

James
86vintagehttp://forums.screamandfly.com/forums/images/icons/icon14.gif

[86vintage]

Jay we both said the same thing at the same time look at the times on the posts

James
86vintagehttp://forums.screamandfly.com/forums/images/icons/icon14.gif

[Markus]

The Merc HP oil is not particularly clean burning from what I understand. I would not run that oil in a fishing motor. Give it to someone who runs a high-rpm hot-running race engine. Your engine will be better off with a regular mineral TC-W3 rated oil or a synthetic TC-W3.

[eli]

i have 2 245 carb motors that i broke in with merc hi perf blend at 25 to 1 for 12 hours then 33 to 1, i now have 105 hours on now, pulled out a piston assembly at 90 hours everything was normal,clean no scratching, scuffing,everything looked new,very little carbon,piston tops dry and a little carbon, leakdown less than 2% at a little below top dead center,at top i dont hear any air at all so i dont think its ready for a rebuild yet. maybe another 50/75 hours, i run these motors mostly at 4500 to 6000 75% of the time with the other at 6000 to 7500, when you get into racing some other boat, with a blast to 8000 maybe 2 times a year.

[rockettman]

Thanks for the replys, I think i will just use the QuickSilver PP oil instead. Just thought it might be ok to use the Hi Performance blend.