My significant other took her brand new car (2018 Mazda CX5-Grand Touring; 20K Miles) to a major dealership to have it routinely serviced (Oil Change + Tires Rotate) and the very next morning, on the very next trip after returning home from the service appointment, when 100 miles away from home (rush hour Interstate & Downtown driving) she gets a ‘Low Oil Pressure’ warning light.
She claims she drove it “…less than a mile…” after noticing the lit oil warning light and after trying to safely pull out of traffic. I couldn’t get a straight answer to the “How often do you normally check your gauges?” question, however, when a car has a ‘heads-up display’ the probable answer is “…a lot less often…” than maybe she should since all ‘relevant’ info is projected on the windshield.
She called me at work, had to download and send her the Mazda ‘Oil Level Checking’ instructions. She needed gloves to handle the dipstick since it was very hot fifteen minutes after shutting the engine off at a rainy 55 Deg. ambient temperature. Several attempts of reading the oil level returned the same “…I can’t see any oil on it!..”
Obviously, her morning business meeting had to be postponed for later in the day, the wait for the AAA tow truck exceeded three hours and the vehicle was towed back to the very dealership where it was serviced the day before. She demanded a loaner, she got it and then she went back to where she was heading in the morning, albeit some six hours later.
I did call the dealership prior to her arrival in the tow truck and let them know about the morning events then I stopped by when getting off work. The Service Manager told me that when they got it off the tow truck and started the engine the oil warning light went off (and stayed off). They said they checked the oil level and apparently it was ‘right on the mark’. When asked “…Then why did the low oil pressure light come on the day after an oil change?..” his answer was “…Probably just a fluke of the system…”
Now maybe that’s just me, an engineer by trade, but their explanation borders snake oil salesmanship. Also, the extreme cleanliness of the undercarriage ‘smells’ of a cover-up.
So, is her ‘baby’ damaged goods, or she should just drive back to the dealership tomorrow morning, drop her loaner off, maybe give them a crooked look and drive her vehicle away like nothing happened? Is it going to run as expected for many years to come?
I just remembered my Grandpa’s observations when we were replacing the crank bearings on his '49 F150 Flathead 8:…" One minute of running without oil pressure is the equivalent wear of 100,000 miles driven with proper oil pressure>…"
Am I just paranoid or we should be looking into replacing the vehicle?