From:Dave Hennessey
Subject:RE: gas oil mix Date:Wed Aug 20 21:48:32 2014
Response to:19802

Beautiful bike! Seems like you have a thing for silver paint.

I like that carrier - never thought of using one like that. Where did you get it or what brand?

25:1 is the correct ratio, no matter what kind of oil you use. The original Harley 2-cycle oil cans were marked SAE 40. Most people use a modern 2-cycle oil.

I mix up a 2-gallon can of 25:1 gas/oil mix in the spring, and use it in my Hummer, weed-whackers, chain saw, etc. It doesn't seem to bother the weed-whackers, but I do dilute the chainsaw mix a little. Since the Hummer gets about 100 mpg, most of the mix gets used in weed-whackers.

In the fall, I add STA-BIL fuel stabilizer (available in most auto parts stores) to everything (both 2 and 4-stroke) that will not be used during the winter.

Back in 1953, many Americans had "party line" telephones, and a few still exist in isolated areas. But I think you meant the other kind...


I have a 1953 ST. In 1953 the book said mix 25:1. Modern two cycles mix at 50:1. Is it the modern engine or the modern oil? What's the party line on what the mix should be?