I am aware of the possiblity that coolant and oil could be mixing if
there is a crack in the engine block. All those checks are negative,
engine temperature is always good. I plan to check with Honda
dealership tomorrow.

Elle wrote:
> This unfortunately is a symptom of a rupture in the engine
> block/head cooling system such that it's getting into the
> oil system. For example, a head gasket leak.
>
> Check
> -- the appearance of the coolant in the radiator, via the
> radiator cap, in a cold engine. Same for the coolant
> reservoir. If oil is present, it's looking like a head
> gasket or similar leak.
> -- the appearance of coolant in the oil system. Look into
> the filler cap hole and check the dipstick. Look for foreign
> residue on the filler cap (white?)
> -- Does the car's exhaust smell like anti-freeze at all?
> -- Look for foreign residue (white?) on the spark plugs.
> -- Is the car overheating at all.
>
> I would not drive the car further until this is resolved. Or
> certainly do not let it overheat. This will worsen the
> problem and make it more expensive to fix.
>
> "Pauly" <paul.jonaitis@gmail.com> wrote
> >I have an ongoing oil consumption problem in my 99 Accord
> >(4 cyl). The
> > car has 88k miles.
> >
> > Yesterday I checked oil after the car was parked for about
> > an hour (on
> > a very hot day) and the level was below the lower mark.
> > This morning I checked it again (the car was parked
> > overnight, so the
> > engine was completely cold) and the level was almost at
> > the full mark,
> > about 90% full. How is this possible???
> >
> >
> > There are no drip or leak marks under the engine or in the
> > engine bay,
> > last oil change dealer could not locate any leaks (oil pan
> > seals, etc),
> > so they asked me to start recording oil levels when I fill
> > up gas.
> >
> > Any explanations for such fluctuation?
> >