Range, and don't forget the awesome rewards club they promote telling us that for every million gallons of fuel purchased, or something like that, you'll get a "free cup of coffee"!
I jest of course.
We know for diesel purchases that prices are marked way up because of their own fuel cards offered for fleet users which will discount the cost of diesel may be up to $1 per gallon depending on the negotiated price with the fleet. I tried to get one from Flying J's/Pilot but they ignored my request being just a simple RV'er. I had no D&B rating or tax ID.
I did get a TSD Logistics fuel card prior to my recent trip to Raleigh, NC two weeks ago. Good at TA (Travel America) truck stops and Lovee's along with smaller regional stations, but on my 1500 mile round trip I never used it because it seemed there were no stations near my travel route when I wanted to fuel up.
Also now there are a lot of other "gas-saving" programs out such as Mudflap which advertises the big savings you'll receive when fueling up at their network of stations. Again I'm not about driving multiple miles each way to try and find one of these stops to save $.10 a gallon.
sherman12 and The Fabulous Miss Barb
2014 SportsCoach Cross Country 360DL DP
Former 2011 Georgetown 330TS
Kia Sportage on MasterTow Dolly