My brother in law is a mechanic and owns his own shop. He says to never use Sheetz because it is the worst gas out there. Anyone have any comments on this? Is it a fact or just an unfounded rumor?

I like Sheetz because they are usually the cheapest around.

 

Never heard of Sheetz gas. FWIW, I thought that most of the gas companies recieved thier gas from a handful of refineries, meaning that the gas itself is normally good quality as it is all in the same. On the other hand, there are other factors that can make for a tank full of bad gasoline including...
1. Condensation
2. Watering down gas by stores
3. Pump filters not being cleaned
4. Filling up right after gas has been dispensed into the underground tanks

 

I haven't had the best of luck with Sheetz gas. One time after filling my Dodge up, it didn't even read full. Said I only got 7/8 of a tank. I know I filled it up. Kept clicking away topping off, and filled the usual amount of gallons I do when empty. I only got like 290 miles to that tank, when I usually 335-345.

They are pretty cheap stations here in Ohio though. Like Sheetz, I notice that QT stations are usually real cheap down in the Georgia area, when BP and Shell aren't.

 

Never had a problem with QT gas. You are right about it being the cheapest around in Georgia. I used it almost exclusively when in undergrad because it was close and cheap, never had problems.