oil blowback?
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oil blowback?
I just purchased a '04 screw lariat. Unfortunately I had to do most of my dealings over the phone due to distance issues. Long story short, I checked the oil and noticed it to be low. Pulled the filler cap off to add oil and noticed it was plugged full with oil sludge, "blow back". I have asked several people who have given different theories. PVC valve, short distance miles. As I am not a mechanic does anyone have any theories from similar experience. Thanks
Fleet Owner
Joined: Jan 2004
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From: Brentwood,CA
ok bad sign. the only thing i can suggest is to change the oil and drive it. if it really is from short trips the condition should clear up. oil takes 45 mins to burn out contaminates. short trip driving is the worst.
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thank you I will give this a try and let you know how it goes. thanks again
Originally Posted by ford390gashog
ok bad sign. the only thing i can suggest is to change the oil and drive it. if it really is from short trips the condition should clear up. oil takes 45 mins to burn out contaminates. short trip driving is the worst.
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If the sludged was milky white and you purchased your truck from a cold climate the milky white may be condensation. Condensation accumaltes normally when warm engines are parked in very cold weather. There is no remedy for this. One prevention is to change oil more often than the usual 3000 miles.
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thanks, the truck was purchased from the vancouver area of the west coast of canada, this would make sense. than you.
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I should of incuded this in my last post:
When I lived in Colorado I always had a service station do my oil because I lived in an apartment that disallowed auto maintenance in the parking lot. When I got to Wash DC I began to pull the oil stick more often on my T-Bird. I almost fainted when I saw drops of what appeared to be water mixed in with the oil on the stick. I also noticed the white milky accumalation on the oil cap. It took awhile for me to realize it was condensation that was attributed to the more than moderate cold of the winters and the warm engines. I am from California and cold is not in my past.
When I lived in Colorado I always had a service station do my oil because I lived in an apartment that disallowed auto maintenance in the parking lot. When I got to Wash DC I began to pull the oil stick more often on my T-Bird. I almost fainted when I saw drops of what appeared to be water mixed in with the oil on the stick. I also noticed the white milky accumalation on the oil cap. It took awhile for me to realize it was condensation that was attributed to the more than moderate cold of the winters and the warm engines. I am from California and cold is not in my past.
Logistics Pro
Joined: Jul 2002
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From: South Dakota
I have also encountered the same problem on trucks that I have owned in the past, inaddition to the F150 I have now.
The milky white stuff on the filler cap isn't necessarlliy something to get too excited about, unless you are seeing the same garbage on the dipstick.
My F150 has the same stuff on the cap, but the motor oil it self is a good golden hue (i.e. no water sludge), even after 5000 miles of mixed driving in -F temps.
Now if you have the stuff on both the dipstick and cap, and it doesn't clear up on the dipstick after a good drive, or oil changes, now you have a problem.
The milky white stuff on the filler cap isn't necessarlliy something to get too excited about, unless you are seeing the same garbage on the dipstick.
My F150 has the same stuff on the cap, but the motor oil it self is a good golden hue (i.e. no water sludge), even after 5000 miles of mixed driving in -F temps.
Now if you have the stuff on both the dipstick and cap, and it doesn't clear up on the dipstick after a good drive, or oil changes, now you have a problem.
Senior User
Joined: Dec 2003
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From: Virginia (Northern)
the white milky stuff is buildup over time of sulfur which is caused by the water (for reasons mentioned above) that did not have time to evaporate each time the engine runs... on other words... short trips in cold weather... very bad... very bad...
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