In an attempt to make life a little easier I bought some "calibrated" measuring cups.
After suffering some variability of results I checked the measuring cups and found that the ratio measurements are way off. For example using the 2:1 and starting with about 320 ml, the extra "1" added only about 100 ml rather than the expected 160 ml. Quite an error and which I think goes some way to explaining the variability as sometimes I used the basic ml measurements.
The normal ml measurements seem about right, it's just the very helpful ratio markings which are wrong.
Hope this helps somebody.
Paint mixes using graduated measuring cups.
Re: Paint mixes using graduated measuring cups.
A friend of mine bought special pot marked up for oil / fuel mix ratios, we checked it and found it was way off. In this instance it wouldn't have mattered as his motor was a seagull so you can use pretty much anything unless the bottle has a picture of a chip pan, but had it been an Evinrude..... 