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
ticket
A percentage or flat fee for rags, solvents, waste oil. Legal in many states if disclosed.
Say · How much, and is it a percent of labor or a flat? I want it on the written estimate.
A 10% 'supplies' on a $2,000 ticket is a junk fee unless they can show a policy. Ask to cap it.