1:25 or 1:40

[harry11]

I bought a kxd mini dirtbike 2009 model and have for the last 4 weeks have been running it on 1:25 but now every time i rev it it makes a low pitch sound and sometimes cuts out i think this is due to to much oil in the mixture.

I was just asking if it is ok to start using 1:40 in the 49cc engine

 

[liljohn_92]

yer .... there cheap to replace anyway... i use 50:1

 

[unitrider08]

this is hard u gotta do it with a 10 litre can
but i run 38:1 its gold