4. Rarely NAPA or Pep Boys for Euro, specialty oils only
I grocery shop ~ every two weeks a t WM, so when I know an OC is upcoming I pick up stuff whilst there.
No sense paying for massive resource-wasting delivery when you are not in a remote location or homebound.
Who ever is cheapest. I have probably 7 different brands in my shop right now due to sales or rebates. Amazon, walmart, and advance auto have my big 3 for motor oil and trans fluids. Autozone a little but not one near me.
Walmart oil prices are significantly lower than PB/AZ/AA. A 5qt jug of M1 EP at WM is around $28 at WM. In AZ it's something like $41.
I did pick up Rotella Gas Truck for $20 at AZ but that was only due to the product being on clearance.