I used to to go to one in CA because they had a good price for oil changes on my diesel truck. One visit I asked them to service the differential. At my next visit, they approached me in the waiting room with a sample of my differential fluid to show me how bad it is, and recommend changing it. So, I asked to speak with the manager and pulled my receipt from the previous service with the charge for the differential service. I told him either you're trying to scam me, or you didn't perform the differential service I paid for last visit. Either way, I want the fluid changed and I want to watch it being done, or should I call the sheriff. They did the service with me watching. I never went back.
|