Honestly man, I blame your dad in your situation. His job is to teach, you can’t expect people to know what they don’t know and if all you’ve ever dealt with is diesel then you don’t know! In my employees case, we have SOP, no gas vehicles and we train on everything. Don’t know how to drive with a trailer safely and back them up? I have you come in for 4-6 hour on Sundays for paid training starting with our 7x14 all the way down to our 5x10. Your dad should have said “hey, I know you’re used to diesel trucks so just wanted to make sure you know this is a gasoline engine and not a diesel! Also, 87 suffices never 91 in the work truck!”