This would depend on what type of oil you will be using for your premix. The oil base stock is either petroleum, semi-synthetic or synthetic oil and is mixed with gas at a ratio ranging from 16:1 (petroleum) to as high as 100:1 (synthetic). I personally ride a 2001 Kawasaki KDX200 that I run Yamalube 2R at 36:1 with no problems. Although synthetics say you can mix them at 100:1 I would not, that seems way too lean to me.
32:1
Best to use two stroke oil. Mix it with the petrol, (I guess you know this)
it smokes out the exhaust...
4 stroke
No they are to very different oils same purpose different applications.
buy garden engine oil from Halfords then follow your manual instructions for a mix
No
Soy
Your bike is a 2 stroke. since you are mixing gas and oil together oil naturally blows out your tail pipe. if this is happening, then there is nothing wrong with your bike, unless it is a 4 stroke.
If your 2 stroke dirt bike starts to smoke really bad that means you have to much oil in the fuel or the wrong kind of oil. Or the pistons, oil rings or cylinders are badly worn.
It depends on the bike, riding conditions and usage. Standard factory mixture is 32:1 (for Yamaha 2 strokes) But with my racing bike, to allow it to perform at peak, we use a synthetic two stroke oil and mix it as little as 42:1 (gas:oil)
standard 2 stroke oil snowmobile or dirt bike oil