Ted,
Adding lube oil to gasoline lowers the flash point of the fuel increasing the chance of detonation. Oil in the fuel is necessary
for these type of engines, but NEVER use more than the manufacturer's recommendation. Failure to follow this simple direction
could melt the pistons, the heads and effectively ruin the engine and I have seen this hundreds of times. I know this is counter
intuitive, hence the number of times this failure occurs.
Steve

ted@theted. wrote in message ...
i have a jetski and a boat with an evinrude 115 hp outboard. can
they both use the same gas/oil mix? someone told me it should be
a pint to six gallons but i would rather mix a pint with 5
gallons because it's easier and to be on the safe side if that's
ok. is a pint to 5 gallons ok for both the jetski and the
evinrude?

thanks!

ted