I saw 10 psi more oil pressure across the board from switching to a WIX XP filter. Did this now on all my cars and have the same results. Pretty phenomenal. I used to idle at 20psi like you and now I idle at 30.
What kind of oil filter are you running? My LQ4 was always 40 at idle when warm, about 50 to 60 cruising. I started using AC Delco filters and ended up just under 40 at cruise and 20 hot at idle like you have. Went to a Wix at my next oil change and got the original pressure back. The Delco filter was restricting pressure. No problems since with Wix
What kind of oil filters are you using? Ac delco filters caused similar oil pressure on mine, switched to wix and now it always has like 45psi at hot idle, and around 60 at cold start.
Id also pick up the Fram ultra filter
I wouldn’t worry about who does the service. Just don’t use shitty Filters. Use OEM or Wix.
I assume that if I get the el cheapo Fram with the paper media, pretty soon all the paper inside will be shredded?
The oil filter *would not* come off and just got crushed when I put a wrench on it. I ended up cutting it apart to use the oil passages to turn it, and when I cut it up I discovered that the oil filter was completely empty besides a small cardboard tube.\n\nThat filter looked like a FRAM, but instead of a filter had been filled with a roll of toilet paper.
it only lasted 600km before I had issues with oil pressure.
Don't buy entry level Fram filters.
They got super cheap about 15 years ago and caused some of our club cars to have issues with pressure. So that was the end of that.
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