All of you make me chuckle.
Drive a 1991.
My car tells me when I have "LOW OIL" when it is 2 quarts low. The engine holds 5. "LOW COOLANT"? I unplugged that sensor, because it is confused and stays lit..... and I have a gauge that tells me if the car ACTUALLY REALLY needs coolant. Check Engine flashes at high RPM's. If I am at high RPM's, I am doing a burnout or going much faster than I should be... so that is ignorable. It probably is going nuts because I removed all of my emissions regulating parts.
BUT: I still have heated seats, A/C, a power convertible top, power lumbar, white leather interior, 300 horsepower (just enough for a little Foxbody), and an HD Radio.