On Apr 23, 8:55*am, Tim wrote:
I know that the ancient engines recommended using a quart of 30 weight
engine oil to gallons of gas, which was primitive, then with 2-cycle
oils the recommended mix ratio went from 24 to 50 to one, Now the
synthetics are going up to 100:1 ratios and for a modern 2 cycle I
think that's OK, but I'm not sure about the designs of the 70's.

My brother is an Amzoil dealer and he things it's the greatest thing
since malted milk, and I like synthetic 2 cycle oil, but I'm wondering
about the recommended mix ratio. personally I think 100:1 is a bit
thin.

Anyone have any thoughts?

Forgot to mention I used to have a Arctic Cat free-air 440 Snowsled .
I used to mix it 100 to 1, no problem. Also used to have some old
Bombardier Ski-Doos....30 to 40 to 1 on those old babies.

I think you could get away with putting it in a 4 cycle engine in a
boat, to give extra lubrication to the rings if need be. Just for 1
tank.......