changing all fluids on a 1987 ski nautique with a 351 comman

[bdanley]

i recently bought a a 1987 ski nautique, shes a beauty. taking it out shes purs like a kitten, except for when i switch from forward to reverse, talking with friends of mine who have ridden on the boat. They have gotten into debates about what would help the hard shifts, one of my friends has mentioned to change my automatic tranmission oil over to gear oil he sais it will hold up to higher friction, and heat. while the other side says you are crazy and to stick with what i got. I was wondering and this might be a matter of opinion what might be the best idea without taking apart my transmission to help fix my problem.

[ffmedic74]

RE: changing all fluids on a 1987 ski nautique with a 351 co

I would suggest calling fantastic finish marine. They are boat tranny experts and might be able to help you out.

http://www.fantasticfinishmarine.com/index.html

[TRBenj]

RE: changing all fluids on a 1987 ski nautique with a 351 co

Eric (of Fantastic Finish Marine) will recommend conventional Dexron/Mercon ATF. He prefers Valvoline, so thats what I run. He's definitely the tranny expert to talk to- hes a regular on CCFan.

[seven20]

RE: changing all fluids on a 1987 ski nautique with a 351 co

All I can tell you is that is isn't recommended to use synthetic tranny fluid...my mech told me that's why I blew mine in my 87 last year