Wanted to ask around and see what techniques you guys use when topping off your tank during a fill up. Did a search for this information but the results all seemed to date back to 2008 and earlier, thought it was time for a revisit.
So what do you do? Wait for a single click? Double or triple click? Round up to even dollar amount? Round up to even gallon/liter amount?
I understand consistency is important, and some people go as far as to ensure they use the same pump at the same gas station every time ? or even the same time of day to account for temperature variances.
I do the same, I wedge the gas cap in the pump handle, go to the first click, then I hang up the pump. I do not try to force any extra fuel in. This can damage the evaporative emissions system on some vehicles, causing the system to be filled with liquid fuel.
I fill up my Hondas until I can't fit any more in. I haven't had any ill effects thus far (at least 2 Hondas with over 230,000 miles). I don't top off the Chevy as much, because I cannot see the fuel going in (it has a flap, whereas the Hondas do not). Plus, the Chevy has a 34-gallon tank... topping off is moot.
Stopping for gas in Indy can be an exercise in waiting for a pump, so I want to fill up as infrequently as possible. I can go over 500 miles in the Civic by topping off.
I stop at the first click at any gas station and any pump .. it all evens out in the end ..
IMHO if your gonna get too anal about how and where and why, then maybe your just not getting enough mpg to begin with ..
I do top off but think it's a bad idea. It's best not to dump liquid fuel into your evap system. I do it so I know my tank numbers are more accurate, but I may be hurting my FE by doing so. The difference in not topping off will average out, but I want do know now for sure; which is dumb and impulsive and working against my over all goal (being a cheap skate).
Also +1 on using the same pump when ever possible.
I fill to the very top, including the fill tube. On the other hand i have run my car dry, put in a set amount and run dry again. Less fuel, less weight, exact mpg. I am now running with a full tank as i believe gas to going to go up again. The only good thing is that i don't drive that much anymore. If gas goes way up again looking to get over 750 miles on a full tank of 13.2 gallons.