1994 F150 4x4, 302 engine, 217k miles. FL1A, M1HM.
I've owned about two years, but was one-owner and well maintained with records of regular oil changes at Ford dealership. Leaks at rear main, probably burns some, but no noticeable signs of it. Every time it is driven (about 10,000 miles/year) it pulls about 3,000 pound total weight in mower and trailer.
The oil pressure has become progressively worse. I assume it's not the sender as every Chevy I've had showed oil pressure gauge irradically (quickly) jumping all over the place when sender gauge went bad. This is nice and steady and spends a good deal of time just below the "normal" word, but a long ways from the truly normal mid-point.
I moved up from 5w last year, but don't really see much difference. Pressure seems to show better for the first 200 miles after an oil change (maybe coincidence) and after for an entire trip after it has really been opened up (turning overdrive off and accelerating to pull trailer up hill (not alway, so may be a coincidence too)
I surely don't need thicker than the M1HM10w30...could this actually be the gauge, or am I running it oil-starved?
I've owned about two years, but was one-owner and well maintained with records of regular oil changes at Ford dealership. Leaks at rear main, probably burns some, but no noticeable signs of it. Every time it is driven (about 10,000 miles/year) it pulls about 3,000 pound total weight in mower and trailer.
The oil pressure has become progressively worse. I assume it's not the sender as every Chevy I've had showed oil pressure gauge irradically (quickly) jumping all over the place when sender gauge went bad. This is nice and steady and spends a good deal of time just below the "normal" word, but a long ways from the truly normal mid-point.
I moved up from 5w last year, but don't really see much difference. Pressure seems to show better for the first 200 miles after an oil change (maybe coincidence) and after for an entire trip after it has really been opened up (turning overdrive off and accelerating to pull trailer up hill (not alway, so may be a coincidence too)
I surely don't need thicker than the M1HM10w30...could this actually be the gauge, or am I running it oil-starved?