Does that not depend on the way it dilutes in the tank though?

Give it to a local firm of gardeners.
Brian

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"Jeff Layman" wrote in message
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On 22/03/19 17:59, ss wrote:
I have some old fuel (approx 1 x litre) in a can.
To avoid the hassle of going to a recycle place would I be ok to shove
it my petrol car when I have a full tank.
The litre is possibly 2 stroke mix as it has a reddish tinge, its
leftovers from a small generator.

If it's leaded it will do your catalytic converter no good at all.

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Jeff