I use the Shell app and Giant rewards. Prices are ALWAYS lower than other Shell stations. ALWAYS. No comment on mechanic, store, etc. I drive up, fuel up, and go. Never had an issue. Shell app saves me time and frustration.
This place will steal your giant rewards cash back. I had $0.30 off per gallon and the guy “accidentally” reset my pump after I redeemed the points but before I pumped my gas. When I asked him about it he refused to help at all.
Best shop I've come across in over forty years of driving. Knowledgeable, they work on my BMW, Mini Cooper S, Miata and Honda Element and keep them in top shape. I'm lucky to have a resource like this.