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1989 Ford F-150 mustard

Tiny
JAMFEL151
  • MEMBER
  • 1989 FORD F-150
  • 6 CYL
  • 4WD
  • AUTOMATIC
  • 68,000 MILES
In my truck when I remove the oil fill cap there is all this mustard green looking stuff all on the inside of the cap and around the neck of the oil fill hole and im puzzled about what it is?
Friday, March 13th, 2009 AT 7:46 PM

3 Replies

Tiny
BLACKOP555
  • MECHANIC
  • 10,371 POSTS
Sounds like you are getting a antifreeze in with the oil.

I would be checking for a blown headgasket/cracked block/ or cracked head.

If its not that I would suspect an issue with cracked intake manifold or a bad gasket on the intake manifold.
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Saturday, March 14th, 2009 AT 11:45 PM
Tiny
HELPING YOU
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It's only normal condensation - start to worry if it shows up on dipstick.
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Sunday, March 15th, 2009 AT 12:02 AM
Tiny
BLACKOP555
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One way to see what it is if your daring, taste it. Sweet its antifreeze. If it tastes like exhaust smells and gas its normal condensation.
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Sunday, March 15th, 2009 AT 12:07 AM

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