Two stroke oil in fuel

[PeeBee]

Yes 1:1000, I rang him to make sure it was right, he also said don't over dose it.
I had a cleaner additive that also was 1:1000. Can not remember brand but label said treats 1000 litres.

Well, learn something everyday! Must have a hell of an effect at that ratio. Did he mention why you should not 'over dose'?