engine oil

2003 PONTIAC SUNFIRE
210,350 MILES • 4 CYL • FWD • MANUAL
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PATTI MEREDITH
  • MEMBER
  • 1 POST
What is the white film on dipstick when checking oil level? Also on underside of cap.
Nov 24, 2010 at 8:36 AM
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CARADIODOC
  • ✓Experienced Mechanic
  • 34,403 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
Nov 24, 2010 at 8:47 AM
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