The good news is that turning off the AC at stop lights made the light stop flickering. The bad news is turning the AC on lowers the idle speed... so I've got more digging to do.
The oil pressure specs a min of 10 psi at idle and I didn't check it because I'm working in our other shop for a couple weeks (it's a mess) and couldn't find the oil pressure gauge.
I had to remove the oil filter and intake support bracket to get the breather box off so while I was there I pulled the oil pressure light switch and found some sludge in it which I cleaned out with brake clean. I also saw that the head gasket had been replaced, so the head must have been off recently and would explain why it was so clean when I adjusted the valves.
I think the RLI 0W-20 has been cleaning the rest of the engine up during the last 10k. I didn't notice any engine smoke during my 185-190k PHM 10W-30 OCI. But the 190-195k RLI OCI began smoking lightly about 500 miles into it and stopped by 195k. I had cut the O'Reilly MicroGard open from that OCI and found some sludge in it. The 2,500 mile UOA from that run showed very low wear metals and a Visc @ 100°C, cSt of 8.0 so no worries there. The 195-200k OCI had no visible smoke.
Below is a shot of the PCV end of the breather hose.
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Here is the breather box end (yes the split goes through which helped coat the breather box with oil) and whats left of the brittle grommet, not shown is the plastic tube that connects them because I re-used it.
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Anyway I decided to step up the viscosity one grade at a time until oil consumption decreases instead of using my initial idea.
The SSO went in yesterday at 200,200 miles and will see some miles this weekend.
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The air filter on the left is from the last 10k and looks cleaner then it is because the clean side is up.
It does have a light film of fine sand on it and probably could have been used longer but I wanted to start with everything fresh for the SSO.