Originally Posted By: Honda2003
Originally Posted By: d00df00d
First, check your PCV system. Replace anything that looks at you funny.
Then, run the MaxLife straight with no additive for at least 2-3 oil changes and see if the consumption settles out.
As far as I can tell, Lucas Oil Stabilizer is pretty much bunk; the only thing it's good for is making a busted engine appear trouble-free just long enough for you to sell it. If it makes no difference to you, that's all the more reason to stop using it whatever happens.
I've cleaned the PCV Valve its the one without the shaker its just straight through. Its been all nasty before but its all good now and has been for a while.
It's strange that the PCV valve doesn't have a shaker. My '01 Chevy with the 5.3 does have a traditional valve, AC Delco #CV948C.
Do you still get the startup knock? Mine has made a little noise on hot startup, but nothing as bad as the "piston slap" people used to talk about. I have tried getting rid of that by adding a quart of thicker oil each change, but I'm not sure that has made a difference. I guess I just don't pay attention as much now.
Several years ago, I got a gallon of Lube Control LC20, and have been using 6 oz. per change and 2 oz. every 1500 miles. Twice after long highway trips (halfway across the country) I noticed a cold start knock that was cured by adding a little bit. Your truck has double the miles of mine, so I'm not sure the LC20 would have the same effect.
Others have given plenty of oil suggestions. I would use one of them without the Lucas.