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2 Stroke Mix

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hi,

just bought my first 2 stroke again in over 10 years 290 beta evo,whats the best fuel mix ratio? if i fill a 5 litre can how much 2 stroke oil do i put in?

Regards Doug.

I've ran all my bikes with 15ml per litre using semi synthetic never had a problem in 25 years.

  • Author

thats great id worked it out to be that!!!! just needed re-assurance.

500 Ml!!!!!!

Start at 80:1, so 63ml ish.

If you want to play with other ratios, just dived 5000ml (5 litres of petrol) by your ratio.

So

70:1 = 5000 divded by 70 = 71 mls

80:1 = 5000 divded by 80 = 62.5 (63mls)

and so on.

Don't think you'll go wromg running 80:1 though, and it's worth running higher octane fuel. Shell optimax is higher than BP Ultimate.

sorry to high jack this thread.. can i ask if i fill a jerry can with 20 ltrs at 80:1 i will need 250ml of 2 stroke? and also will the mix last 2-3 week mixed or will it all settle?

cheers tom

all the bikes ive had have been 50:1 which is 100ml per 5litres.

Hi

At the top of trials central page click on the other box. the thingy drops down click on technical , Ron Milams collection comes up. Go to Engine oils and fuel ratios . All will be reveald about ratios that even a idiot like me can understand. Then go to Google and search 2 stroke fuel ratio and I got a chart with how much oil per ltr per 5 ltr per 10 ltr for most ratios. I think it may be from the Hell team website in Aussie.

Now I am a expert

Pete

All this about ratios depends on the oil you are using. If my memory serves me right Beta recommend 4% for semi and 1.5% for fully synthetic so thats 75ml per 5 litres on fully synth.

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