Accurate fuel fill without topping off?

[Ilovemyyaris]

Originally Posted by Yaris Hilton

It'll still clog up your charcoal canister.

How many times till that happens? Is that just a long term effect?

I've been topping off all the way to the top of the tube to make sure my mpg calculations were as accurate as possible. I haven't noticed any bad side effects. I just thought it wasn't a good idea because of the risks of spilling gas when it gets close to the top. I wont be doing that anymore.