"motsco_ _" <"motsco_ > wrote
> Chuck Connell wrote:
> > My Odyssey, with only about 75K miles, is going through
almost 2 qts of oil
> > per change (every 3000m). So that is about 1 qt of oil per
1500 miles. This
> > seems excessive to me. The car runs fine and there is no
obvious oil in the
> > exhaust smoke. Is this something to worry about? The dealer
told me last
> > year that one qt per oil change was OK, but now it is getting
worse....
>
> That's not really bad, Chuck, but you might find your PCV is
stuck open
> . . . It will suck the vapour out of the crankcase like crazy
and burn
> it invisibly.
>
> Our '95 ody had PCV issues too.

To bark further up the PCV valve tree--

How's the fuel mileage? Have you noticed a lot of oil on the
lower part of the engine exterior? Oil dripping on the garage
floor, maybe? There really should be none.

A malfunctioning PCV valve can reduce engine efficiency notably.
If, instead of the valve being stuck open, it's actually clogged,
then this may compromise various oil seals, allowing the oil to
leak out.