[DML] Oil Pressure Weirdness

["Scott McMullan" <mcmullas@xxxxxxxxxxxxxxxx>]

OK, so I've spent some time looking at back posts to the list and haven't
seen my problem (coulda missed it, but it's clear this isn't TOO common a
question anyway).

When I fire up my car, the oil pressure behaves what I believe is pretty
normally.  At idle, the pressure is around 40, anything over idle, and it
hovers around 70 (my gauges are metric so the numbers are actually like 2.6
and 5, but I digress).

I noticed the other day that after I've been driving for 25 minutes or so,
oil pressure at idle drops to something like 10 (yes, below the 1st non-zero
tic on the gauge).  Anything over idle, and the pressure recovers to around
60, but drops rapidly back to 10 as soon as I clutch-in and gas-off.

This behavior does NOT start when the engine has warmed up; it's at
operating temperature in a few minutes.  After 10 or 15 minutes of driving,
the pressure appears to be trending lower, but hasn't reached alarmingly low
levels yet.

I don't know how new this behavior is... honestly once I observed my
pressure seemed to be OK, I stopped looking at it (I had more concerns with
temperature than oil pressure so my attention was diverted).

My oil and filter are relatively fresh; under 1000 miles old.

Is this just a bad batch of oil?  Is it maybe the wrong weight for summer
driving?  Or am I looking at something more difficult, like a failing oil
pump?

Thanks in advance.
--Scott
#17094




To address comments privately to the moderating team, please address:
moderators@xxxxxxxxxxx

For more info on the list, tech articles, cars for sale see www.dmcnews.com

To search the archives or view files, log in at http://groups.yahoo.com/group/dmcnews 
Yahoo! Groups Links

<*> To visit your group on the web, go to:
     http://groups.yahoo.com/group/dmcnews/

<*> To unsubscribe from this group, send an email to:
     dmcnews-unsubscribe@xxxxxxxxxxxxxxx

<*> Your use of Yahoo! Groups is subject to:
     http://docs.yahoo.com/info/terms/