BiiiigTeddy35X wrote:I had the 30K premium service done and I paid about $800, which included changing of the three transmission / differential fluids.
It is the owner's responsibility to establish exactly which services are included on any service package. For instance, most ATF "service" is a simple drain and refill leaving 60% of the old ATF in the transmission, not a complete mechanical ATF exchange with pan drop and interior filter screen, O ring, pan clean, new gasket and onetime use bolts replaced.
When I bought one of my Q45 several years ago, I asked the dealer if they drained and refilled the differential fluid at the 30K interval. The service writer said, "We inspect the fluid and if it is OK, we don't replace it." To which I said, "If it is bad, isn't it a little too late?" To which he had nothing to say.
Infiniti only requires minimum procedures at specified service interval, just enough to get car off warranty and on to your dime when the big expensive items fail. If you are keeping the car past warranty, one needs to consider being a little more agressive on preventative maintenance.