I have been using Gas Buddy for some time, but not very happy with it.
I want to find DIESEL, which should be easy, but isn't. Yes, you can select Diesel as fuel type, but it keeps defaulting back to Unleaded with every button push and a fuel map for Diesel seems to be beyond it.
I've done the web search thing but it seems Gas Buddy is the 800 pound gorilla and the alternatives are wish-ware.
Anyone recommend an app that really works for diesel? I have to believe the truckers have something that works.