What is bar none the best oil to run in these drives behind 600 hp engines in fresh water


I read a few people liked mystik 85-140 but was it the gl7 or the sx7000. What about the amsoil marine or merc

I buy the mercury racing in 5 gallon pails for 200.00 on the net shipped. u need 10 quarts per.

I guess one of the reasons these drives handle that power is they hold more than a quart and a half of oil...

What weight though

What part # oil are you finding 5 gal of the HP for only $200?

Found on amazon prime

QuickSilver 858065Q01 High Performance SAE 90 Gear Lube