What is better for a motocrosser silkolene or castrol 747?

what is the best oil you can put in a motocrosser 85cc to mix with petrol and to what ratio would you use/ i have got a k+n for it so what size jets would you use

Answers:
They are both good, as long as you use the right type. Check your owner's manual for the oil mix ratio, if you haven't got one contact a dealer for the brand of motorcycle you have. As for the jets, you haven't given enough information, but as a rule if you have a K & N filter you'll have more air going in, so you'll need more fuel - I'd suggest one size bigger than standard.
woww shortie you are cool
x x x
Silkolene . or so says my nephew who is the italian junior motorcross champion !
I always used Motul in the racing bikes.

You'll have to jet it accordingly to the climate and engines mods
castrol, and i think i love you
Belray
silkolene has been used for a long time and is tried and tested.
straight 50 , no detergent , big jets because of the viscosity of the oil , but you may have to experiment on the mix. just have fun trying !
they are both good but silkolene seems the more popular oil

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