how do you fix a condensation problem under your oil cap caused by ethanol


Asked by Jan 29, 2015 at 04:10 PM about the 2001 Ford F-150 Lariat Extended Cab 4WD LB

Question type: Maintenance & Repair

5 Answers


is it condensating water or ethonol


I think it is water

1 of 1 people found this helpful.

Condensation under the oil cap is NOT caused by ethanol. It is moisture from the air and the combustion process mixing with the oil and making a grey to white fluid that most often shows up at the oil fill cap. If you are just making short trips around town the oil never gets hot enough to evaporate the moisture from the oil and it tends to accumulate. If the buildup is large you may have a head gasket or cylinder head issue and the mixtere may be antifreeze and oil. One must remember it takes about 15 miles of highway driving to warm the oil up to it's peak operating temperature. Oil doesn't build heat nearly as fast as the cooling system.

Best Answer Mark helpful

It's not really a problem. As long as the oil on the dipstick doesn't look the same way.

1 of 1 people found this helpful.

unlees it is condensating water in the oil which will change its viscosity

Your Answer


Looking for a Used F-150 in your area?

CarGurus has 219,880 nationwide F-150 listings starting at $1,222.


Ford F-150 Experts

  • #1
  • #2
  • #3
View All

Related Models For Sale

Used Chevrolet Silverado 1500
2,171 Great Deals out of 149,980 listings starting at $1,499
Used GMC Sierra 1500
881 Great Deals out of 58,809 listings starting at $1,980
Used Ford F-250 Super Duty
386 Great Deals out of 44,942 listings starting at $1,500
Used Toyota Tundra
537 Great Deals out of 36,715 listings starting at $1,500
Used Dodge Ram 1500
332 Great Deals out of 9,589 listings starting at $800
Used Toyota Tacoma
431 Great Deals out of 40,098 listings starting at $2,600
Used Ford Mustang
278 Great Deals out of 38,263 listings starting at $1,995
Used Ford F-350 Super Duty
391 Great Deals out of 25,424 listings starting at $1,995
Used Chevrolet Silverado 2500HD
395 Great Deals out of 31,269 listings starting at $1,950
Used Ford Explorer
835 Great Deals out of 63,811 listings starting at $600
Used Chevrolet Tahoe
625 Great Deals out of 37,366 listings starting at $795

Used Cars For Sale

2018 Ford F-150 For Sale
32 Great Deals out of 140,411 listings starting at $19,500
2017 Ford F-150 For Sale
167 Great Deals out of 11,426 listings starting at $18,450
2016 Ford F-150 For Sale
204 Great Deals out of 8,022 listings starting at $14,500
2015 Ford F-150 For Sale
339 Great Deals out of 10,347 listings starting at $11,990
2014 Ford F-150 For Sale
516 Great Deals out of 12,905 listings starting at $8,991

Content submitted by Users is not endorsed by CarGurus, does not express the opinions of CarGurus, and should not be considered reviewed, screened, or approved by CarGurus. Please refer to CarGurus Terms of Use.