回復 fibbi
How much do you save each time?
lo_pak 發表於 2011-10-20 08:49 
I ran some calculations a while back, and it turned out that taking the credit card 2.5% premium, gas price difference, and the amount of gas I used going down and coming home into account, I can only save $3 - $4 if I go with a nearly completely empty tank (with the low gas warning light coming on and 5 - 7 L's worth of gas remaining in the tank). This does not take into account the amount of time I need to drive down and back, nor does it take into account the miniscule amount of wear and tear on the car from the drive. Additionally, I only go late in the evening when there is at most a 5 or 6 car wait. If the line up is long, I waste more gas idling.
Unless the requirements are all met by coincidence (I'm in south Richmond / Delta, tank is nearly empty, it's late in the evening, etc.), I don't bother going down to PR specifically to fill up.
-Lik |