Reminds me of when I drove out to CA for vacation. My car was in need of an oil change so I stopped at a jiffy lube. I told them I wanted 5W30 (remember I'm driving back across country in the winter and the temps are at or below freezing) The tech proceeded to argue with me that the manual doesn't call for that thin of oil. So after a little roundy round with the tech I pointed to the plate and said what state does that say?

Uh Maine.

Do you know where Maine is?

Uh ya by New York.

Do you know how this car got here and how it is returning?

Driving?

Ya.

Do you know how cold it is from the rockies on?

No.

Damned cold enough to call for 5W30 so put it in.

But the manual says...

I'm paying for it put it in.

OK it's your motor your ruining.

I hate Jiffy Lubes. I took mine to a Jiffy Lube when I lived in an apartment (we weren't allowed to do oil or use jacks in the apartment for liability reasons). The idiot sat in my car with his tool belt on and put a tiny hole in my leather seat. He also got grease/oil in the interior of my car. I chewed them out and never went back.

I started going to an Oil Can Henrys instead. A bit more pricey, but I get to stay in the car while they do the work.

Getting out of that apartment was great. I could finally do some simple work on my car.