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I cleaned my PCV valve (yeah, I know I should have just bought a new one because they are only $4) and this seemed to help some. But I did 500 miles on the interstate this past Saturday after 150 miles on Friday and on Sunday morning there was no oil on the dipstick -- scary!
Why is it that the interstate miles are so much harder on the oil than town miles? Is it the high speed, temperature, or both?
I'm no expert on engines but I have a co-worker who is. When I was lamenting to him the other day about the high oil usage on this truck, I mentioned that one of the alleged reasons was that there were fewer drain holes in the rings. He said rings don't have drain holes as this would be counter to creating compression.
What he said made sense. Where are these oil drain holes that the 2000-current 3.2's have more of than the 98-99? Anybody have a picture of one these rings?
I'm due to change the oil in about 500 miles. I will be driving this on a business trip tomorrow. I've been using 10W-30. Maybe I'll try switching to 20W-50 for one oil change. And I will try to get a new PCV valve tonight before I make that 500 mile trip tomorrow. We'll see how it turns out.
Thanks!
JWS
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