+1 for having a direct read oil pressure gauge. If the engine sat for a long time, you stabbed in a dizzy - you pull the coil wire and spin it over until it builds oil pressure - put wire back on and start it up. You can pull the plugs and give each jug a shot of Marvel's for long sitting engines.
Just the other day I was on my way to town - ammeter is suddenly reading -20, WTF! Nice place to pull over in about 3 miles. Open the hood, don't see anything exciting. The battery wire press on connector on the alternator was loose. Pressed it all the way back one - Boom ammeter reads 0 at idle with both heaters on Yea easy fix.
When dad taught me to drive, it was look at the road, look at review mirror and look at the instrument panel then look at road - run that loop all the time - nothing sneaks up on you from behind and you will notice overheating before it happens and no electricity before the battery is dead and low/no oil pressure before it causes engine damage.