Sandydog
NAXJA Forum User
- Location
- Albany, NY
So recently replaced the cylinder head on a 2000 Jeep with 145K miles that I purchased.
Got low oil pressure.. confirmed with mechanical gauge. 40psi at cold start, 10 psi at warm idle, 20PSI at 1600 rpm. (I already swapped the oil sensor - no change)
I went from 10W30 to 15W40 with no noticeable increase in PSI but do feel the engine is a bit noisy now. (used Rotella 15W40 with a Napa gold filter).
I was at a shop today and a guy suggested I go with a synthetic 20W40 - I'm in the Northeast, but he said synthetic starts as water and thickens as it warms up, standard oil goes the other way starts thick and thins with heat. Is this accurate? As you can tell I am clueless - and here I thought oil is just oil.
Sandy
Got low oil pressure.. confirmed with mechanical gauge. 40psi at cold start, 10 psi at warm idle, 20PSI at 1600 rpm. (I already swapped the oil sensor - no change)
I went from 10W30 to 15W40 with no noticeable increase in PSI but do feel the engine is a bit noisy now. (used Rotella 15W40 with a Napa gold filter).
I was at a shop today and a guy suggested I go with a synthetic 20W40 - I'm in the Northeast, but he said synthetic starts as water and thickens as it warms up, standard oil goes the other way starts thick and thins with heat. Is this accurate? As you can tell I am clueless - and here I thought oil is just oil.
Sandy