How many gas tanks can you go through with a full tank of yummy oil on a scrmabler 400.

Does it ever fail? Someone told me it sometimes doesn't mix right.

 

i never had any trouble with the mixture on mine but i took it off to save weight and i feel safer mixing myself. I'm not sure how many tanks of gas you can use on a tank of oil i always topped off my oil whenever i put gas in just to be safe.