Owner's book · not a shop
Know the car. Then the window. Factory specs in plain English — don't authorize until you can say this at the counter.
RO glossary
Beginner · short stepsExpert · spec · code · mm
Look up the slang on the ticket. Read the trap on that line.
Invoice slang: LOF, MPI, R&R, NTF, shop supplies, 'while we're in there.'
Invoice slang
Try cabin-filter, LOF, or flush
tires
Air is already ~78% nitrogen. A paid fill is a F&I or service extra.
Say · I can decline. PSI on the door sticker matters more than the gas blend.
Sold as if air were wrong. It is not required for the warranty.