I have a 2000 Saturn SL1 with 160000 mile on it and over the last few months I have had to buy 2 replacement oil caps. Any ideas on why these%2C I assume are blowing off%3F

Asked by Jan 14, 2014 at 02:22 PM about the 2000 Saturn S-Series 4 Dr SL1 Sedan

Question type: Maintenance & Repair

My 2000 Saturn started using 2 quarts of oil about every 6 weeks a year ago at around 145000 miles.  Now, I have had to replace 2 oil caps that have apparently blown off.  I know each time that the caps were on tightly so it is not a loose cap issue.  Does anyone have any ideas on what this might be.  Any help would be appreciated.

2 Answers

232,835

PCV valve and or associated hoses are blocked not allowing proper venting and causing high crankcase pressures. Replace it.

1,505

Are you getting the OE cap or just universal replacements? Ive had the cheapo 5 dollar universal caps come loose.

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