I have a 67~68 1500. I am running with 20W50, today I got a new oil presure sensor, that has two leads so I will add an idiot light as well, so that if the gauge is off, I know I’m ok if the light is not on.
As far as driving the car in Calgary, I expect to garage it for 6 months starting at the end of October, or when the snow flies! I get concerned that the figerglass body may crack it it gets too cold, and they drop gravel when it gets icy. -No block heater. I guess I will find out soon if it is the oil pump or just a tired gauge!
Thanks for your advice.