What about torco anybody ever use that?

No......Sorry....I talked to the tech center at AMSOIL..they are recommending motorcycle in hi perf merc drives

so who makes the Bravo shop lube? im sure they don't! looks like they just put their own label on it and put it out there.

I can answer that for you, Neo Synthetic oil makes it for us. It was a joint effort to come up with a product that would take the abuse that is required to stand up to the over horse powered drives today.

I give it a BIG thumbs up..... No problems to date. I'm running Bravo Shop oil in my drives and P40 Neo in my engines.

Spectro Platinum Synthetic Differential Gear Oil 75w90 GL-5.



Ken

I believe Torco is the recommended product for #6's.

Torco MTL I think.

Ken

I got 140 hours out of a Bravo running Redline Severe Gear 75-250 before I chunked a tooth. There was also small pitting starting.
Rebuilt drives and switched to Amsoil Marine Gear oil(75-90?) after 50 hours and chunked a gear at 100 hours. No pitting but less hours.
I doubt any oil will keep the upper gears from chunking out. What I did notice was that the Redline shifted smoother, and with the Amsoil, fresh tune up and ethanol free fuel I still did 102.5 at 1000' above sea level. Before the tune and fuel, with Redline at 1500' I'd do 100MPH.
Sea level has always been 102.5
FWIW

Has anyone tried Allison 85-140?

is it the amsoil 80w90 gear oil?