Type of oil for Challenger 1800 twin 110's

[csherwin]

I live in northern michigan and no local dealer, I have read the manual and can't find the type of oil the manual recommends at the local marina. Is there another brand of oil that I could use in place of the Sea Doo Oil? That would be at a Wal-Mart, Tractor Supply, or local hardware store?

 

[From_me2u]

Here is article that I found help me decide about oil.

http://www.sea-doo.net/techarticles/oil/oil.htm

I use only the sea doo oil in my 787 engine . vary expensive but so is replacing motors.
I think you have the same motors X 2


Cheers
Dan