engine oil

2003 PONTIAC SUNFIRE
210,350 MILES • 4 CYL • FWD • MANUAL
Avatar
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 4:36 PM
Advertisement
Avatar
CARADIODOC
  • CAR REPAIR CONTRIBUTOR
  • 34,309 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 4:47 PM
Repair Safety Notice: This information is for general instructional purposes only. Vehicle repair can be dangerous. Verify all information, follow manufacturer service procedures, use proper tools and safety equipment, and consult a qualified repair shop when needed.