I didn't know either...and not sure I do now...but....I collected several of the threads discussing it and put them all in one place.

You've probably read all/most but here's the list anyway, all in one tidy place.

One thing I've learned (as I understand it) is that when the oil is lost through the PCV valve, it's not "burned" and not blowing smoke from the exhaust...it's getting sucked out in vapor form through the PCV.

Yet some owners have never changed their PCV after thousands and thousands of miles. My '01 with 77k doesn't consume a drop until I hit the highway for about 8 hrs straight. I change my PCV at every oil change, just because it's cheap and easy to do so.



http://vehicross.info/forums/showthr...E+FAILURE+POLL

http://vehicross.info/forums/showthr...E+FAILURE+POLL

http://vehicross.info/forums/showthr...ngine+oil+poll

http://vehicross.info/forums/showthr...184#post166184

http://www.vehicross.info/forums/sho...light=axiom+DI

http://www.vehicross.info/forums/sho...light=axiom+DI

http://vehicross.info/forums/showthr...ght=iamironman

Here's the thread from Iamironman...
http://www.vehicross.info/forums/sho...ght=built+2000

http://www.vehicross.info/forums/sho...ine+swap+axiom

Several theories on Isuzu design defect in rings that causes oil consumption:
http://www.vehicross.info/forums/sho...rand+pcv+valve