I’ve long done 7500 oil change intervals for my naturally aspirated cars, and I’m sticking to 5000 in my turbocharged Subaru now, always with synthetic (Mobil 1 or Pennzoil Ultra Platinum, and a Wix XP oil filter).
Don't do 10k oil changes. Stick to 5k with OEM filter, Upgrated QX80/GTR filter or WIX Filter.
WIX 57202. hands down the best filter
Wix XP gave a nice pressure boost...about 10 PSI
Wix xp after watching project farms videos on filters. Historically have used all sorts of filters and never had an engine failure. Use full synthetic and change every 5k miles for twenty five years without any problems.
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.
I think WIX changed their manufacturing process because the one I bought appears to be plastic tack'd to the main housing now, and the ring breaks off when taking the old filter off.
Raise you a 3.0 ford taurus, which dumped all of the dirty oil right onto the starter.
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