2001 Passat
 

My daughter owns a 2001 Passat with 55,000 miles. At around
52,000 m iles, the "OIL PRESSURE.STOP ENGINE" light came on.
After several trips to dealer, and replacement of camshaft belts,
oil pressure sending unit the problem persists. After each of the replacements, the
car appeared normal for as long as two weeks until the same
warning light came on again. One month ago, the dealer dropped
the oil pan looking for sludge and found none. The engine was
oil pressure tested by dealer and found to be normal.
One month after the oil pan inspection, the oil pressure light
is on again. It sometimes comes on at highway speeds and also
in city driving and stays on until ignition is turned off. When
car is restarted it may take several minutes for the warning
light to re-appear. She loves the car, but is frustrated by
the dealer's inbility to correct the problem.
Any suggestions would be greatly appreciated.

...we (Lubrication Specialties, Inc.) have a product tested by Navistar to remove oil build-up and sludge.
*The first 10 people to contact us with your name, address, and contact info (email) will receive a free 32 oz. bottle to test (replacing 1 quart of engine oil)
All you need to do is a follow-up report on your individual results, ex: check-engine light status, oil pressure light, etc...

www.hotshotssecret.com
www.lubricationspecialties.com

have no idea on this.