Not so sure. Gasoline flashes fairly low. But oil has lower octane than
any gas. So pinking or detonation could still be an issue, no doubt.
That's if the compression still makes it up there.....

Brian W

Steve Lusardi wrote:
50 to 1 Remember, too much oil will reduce the flash point of the fuel and
create detonation, which will melt piston and head.
Steve

"rckchp" wrote in message
...
OT. I'm reactivating a 1997 Evinrude 9.9 hp outboard and I've
misplaced the owner manual, and I don't remember the proper oil mix
ratio. Is it 50 to 1, or 100 to 1? Thanks.