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Yeah I switched over to 15w40 super tech heavy duty diesel (all stores near me were out of Rotella) this last oil change and the engine runs a lot better. Better oil pressure at start up (goes up to the 40-60psi range for a bit) then comes down to around 13-15psi at hot idle. When it's really...

Well certainly not reassuring, but not unexpected at least. Before jumping the gun it might be at least worth taking the pan off and doing some inspection. I imagine I may have enough access to push on the camshaft to see if there's play? When I rebuilt the upper end, the lifters didn't show any...

That's what I was thinking but wouldn't there be wear metals on my oil analysis? There's some iron & aluminum but it's only been ~4k miles on the new head/valve train so figured it may be that? Fortunately I've prepared myself for a potential rebuild of the engine, though it was already already...

Hey all, been hunting down a low oil pressure issue on my XJ for a bit now. I bought it with a cracked head but it ran fine and didn't have any milkshake when I fixed it (replaced head/hardware). Ever since replacing the head it's run like a champ. It's needed a couple sensors here and there...