Oil consumption!?


Asked by Jan 29, 2015 at 08:28 PM about the 2001 Chevrolet Tahoe LT 4WD

Question type: Maintenance & Repair

Heavy oil consumption in a 2001 Tahoe
5.3L 4WD A/T. Around one QT. per 700
miles. Not a leaker, other than a what
appears to be a small (?) Rear main leak.
Doesn't smoke upon startup. Steady normal
(above 40psi oil pressure when started.
Has great oil pressure all around. Does
leave a decent smoke cloud when taken
above 4000 rpm, suh as downshifting to
pass, etc. Seems EXTREMELY high
consumption to me. Has always used a bit
of oil every since i bought it at 52,000 miles
but has increasingly gotten worse, used to
be around 2000 miles I would need to add a
qt. Now has 207,000. Any thoughts ideas
other than new rings, etc would he greatly
appreciated. Thanks.

2 Answers


Blue smoke cloud would be burning oil. A black smoke cloud when passing would be running rich. Outside the engine wear, have you checked the PCV valve? Clogged or dirty valve will cause oil usage.

1 out of 1 people think this is helpful.
Andrew Olsen

Change your pcv valve

1 out of 1 people think this is helpful.

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