Oil light stays on too long on a cold start
Because 10W40 is WAY too heavy an oil to be running in a newly-built (or oldly-built but healthy and sound) engine.
C'mon Mister Selective Editor, I had no problems with the amount oil pressure in the summertime w/that oil because I beat that mill mercilessly :D ! Even though it's on
the high side, it's not like when I killed the engine it was revved up cold, and the filter drainback just couldn't hold back 92psi. I shut all My carbureted vehicles off in gear
at idle, or let the clutch up in high gear as soon as the key's off, no VROOOM VROOOOM & then letting My cylinders & rings take a bath in raw gasoline..........
I didn't think the drainbacks should fail either way, and unfortunately I didn't have time to investigate, so it remains a mystery. As far as the weight, I switched to 10w-30 and added "Duralube" to it one summer, but the pressures hot after thumping on it good were less than I was comfy with, and only worth 1/10 in the quarter so................
