Engine oil

Tiny
PATTI MEREDITH
  • MEMBER
  • 2003 PONTIAC SUNFIRE
  • 4 CYL
  • FWD
  • MANUAL
  • 210,350 MILES
What is the white film on dipstick when checking oil level? Also on underside of cap.
Wednesday, November 24th, 2010 AT 4:36 PM

1 Reply

Tiny
CARADIODOC
  • MECHANIC
  • 33,737 POSTS
That's moisture condensation from many short trips where the engine doesn't reach normal operating temperature to boil the water off. A weekly trip of 20 highway miles will reduce that buildup.

Caradiodoc
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Wednesday, November 24th, 2010 AT 4:47 PM

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