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?

I know that the ancient engines recommended using a quart of 30
weight
engine oil to gallons of gas, which was primitive,

THAT....was the stupidest idea to ever come along. All it did was jam
rings, and leave unburnt deposits in the engine. I've torn down scads
of engines that suffered compression loss because of it. Tried to tell
the owner that 30 Wt and gas is a no-no....but couldn't get him to
listen. " That's what the guy who sold it to me SAID to use "
Tried to tell him to use synthetic, or at least 2 stroke
oil....wouldn't hear of it. Eventually ALL the engines died....except
for the one I secretly mixed with 2 stroke.