Otto, no problem disagreeing. I hate to recommend that heavy of an oil, but in some cases it does solve the problem. Back when I was drag racing a lot ( every weekend ) we ran heavy oil for a while. After a season of racing with heavy oil, the distributor gears were half gone. Pontiac's drove the oil pump from the distributor. After seen what the oil can do, we dropped back to 10-30 or 40 depending on how fresh the bearings were. Dad went all the way down to 5w20 with no ill effects.
I figured with that type of dash and how nice it looked, the engine was in just as good of shape. I'am still betting it's a sender issue, either faulty or voltage.
250 are tough engines, but not that tough, it needs oil pressure!
Last edited by Joe H; 04/18/2023 9:14 PM.
