Wen you need to top off a can, add (say) 1 gal (128 oz) exactly -- most gas
pumps inticate to 0.001 gal now) and for 32:1 (say) add 128/32 = 4 oz. The
unknown amount of gas in th ebottom of th egas can is already 32:1 the new
is 32:1 so the result is 32:1 -- if you mismeasure a little and end up at
28:1 or 36:1 you'll be okay, but 16:1 double) or 64:1 (half) you'll be in
trouble, especially w/ the latter!

Agree metric would be easier (except you'd likely mix 15:1. 25:1, 30:1 etc.
vs 16:1, 24:1, 32:1, as you're no longer working in powers of 2.

A disposable (gas/oil resistant) plastic measuring cup, a dedicated pyrex
glass measure or a 60cc syringe can be useful or 2:1 oil in a translucent
container w/ measurement marks can help.

Mix as little extra as possible unless it will be used in a reasonable time
(weeks/months not years)

Harder is if you have several 2 strokes, one taking 20:1 the other 32:1 or
40:1 mix for now you need two cans, clearly labeled, and you need to
remember who's who, then there's th e4 stroke gas w/o oil...\\


"m Ransley" wrote in message
...
For 32-1 you get a 8oz can of lawn boy oil and add 2 gallon of gas to an
empty container. For a different mix Echo oil may come in a different oz
for a different mix. Or use the wifes measuring cup and follow
directions. Old gas goes in the car or boat, simple, dont make it hard.