Minimum Hot idle Oil Pressure
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Enough to pump the lifters back up after 5 mins idling or tapping it up to 2000rpm for a few secs always seems good to me... I run 5W30 Castrol High Mileage*, the gauge is broke, but the idiot light stays off.
(*Consumption on that is about half a quart for the first 1000 miles on the change, and half to one quart on the next 4000... whereupon it will turn black, start smoking and need a change NOW!!! getting 23mpg with no smoke between changes, on a regular 20W50 it was a quart every 1000 and still smoking, getting ~21mpg, on regular 20W50 and 3 cans of bardahls #2, minor consumption, no smoking but heads got sludgy and 19mpg. On regular 5W30, forget it, dunno what the gas mileage was, but oil was only doing about 50mpg and leaving a smoke trail even on the highway.)
(*Consumption on that is about half a quart for the first 1000 miles on the change, and half to one quart on the next 4000... whereupon it will turn black, start smoking and need a change NOW!!! getting 23mpg with no smoke between changes, on a regular 20W50 it was a quart every 1000 and still smoking, getting ~21mpg, on regular 20W50 and 3 cans of bardahls #2, minor consumption, no smoking but heads got sludgy and 19mpg. On regular 5W30, forget it, dunno what the gas mileage was, but oil was only doing about 50mpg and leaving a smoke trail even on the highway.)
I forget the forum, but it was a 4x4 forum where some tech advice that works well for me, the guy posted rev the engine at 3000rpm for 30 seconds, let off a minute and if its still there repeat. It works well on my SOHC, not so much on my DOHC though, the DOHC will usually go away after a few heat cycles, stupid 1st gen lifters
I use castrol GTX 5w30, my cheap catch can I made about 3 weeks ago already has close to 1 cup, I should take pics of how the oil break down looks!
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