Quote:
Originally Posted by schmearcampain
3) Lately, I've been trying to be very accurate with my ratio and as a byproduct of having to measure the oil/fuel ratio, I stopped topping off the fuel tank. i.e. I'd estimate how much fuel I'd used and then calculate the proper oil amount to add before fueling up. This resulted in me not filling the tank all the way to the top and then topping off. I believe this has been a key element in basically eliminating the crickets altogether. Maybe I'm talking out of my ass here, but perhaps overfilling the tank has a similar effect on the vapor pressure of the fuel as high ambient temperatures do?
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I don't think that's it. I have crickets all year long (I don't put any additives in my tank), and I never top off. You should never top off anyway. You can get liquid fuel in the vapor lines and saturate your EVAP canister. It may eventually set a check engine light.
I'm am a bit curious why several people in this thread are trying to be so careful about the ratio. If a couple oz. per tank works, why worry about it further?