"Tim+" wrote in message
...
Now I know that in practice it doesnt matter a jot but every time I mix
up
some two-stroke fuel I agonise (very slightly) over whether its one
part
oil added to 50 parts petrol or one part oil *in* 50 parts petrol/oil mix
(hence one part oil added to 49 parts of petrol)

So, does a 1:50 mixture equal 2% oil in petrol or 1.96%?

Tim

Plenty of online calculators for 2T oil mix
50:1 Hmmmm really ?
you should try that question on a 2stroke motorcycle forum
the page explodes with different opinions

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