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If it is a light brown/tan color, it is water in the oil. You must change it immediately and find the cause. Likely a head gasket or intake manifold gasket.
If it is thick and black, it is sludge buildup. The best way to safely clean the engine is to use a "high mileage" oil such as Mobil Clean 5000 and change the oil every 2k miles for three or four times and it will begin to clean up. To prevent it, avoid idling, short trips of less than 5 miles and regular oil changes according to you owners manual. If you are doing a lot of idling and short trips, change the oil every 3k miles and use 1 pint of Marvel Mystery Oil in place of 1 pint of oil at each change.
DO NOT use ANY other oil additives, ever. NEVER EVER use "motor flush" of any kind, ever.
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Why is there a creamy sludge on the inside of the oil filler cap?
you have a blown head gasket . you have ran the car way to hot , and now you have water mixed in with the oil....
What does it mean when there is engine oil in the water?
headgasket blown.also sometimes a creamy residue on oil filler cap which is a tel tel sign
What is the definition of an oil filler cap?
An oil filler cap is a metal that covers the hole where the oil is poured.
What is an oil filler cap?
Oil filler cap cover the hole in the engine where engine oil is added
Why does my car keep revving on its own?
The Head Gasket is probably on its way out. Check the oil filler cap to see if its gone all creamy
Which oil to put in after oil change?
Check the oil filler cap or the owners manual for recommended viscosity.Check the oil filler cap or the owners manual for recommended viscosity.
How do add oil in a 1998 Jeep 4 liter?
Open filler cap, add oil, replace filler cap...
How do you add oil on an 82 Chevy 350 when there is no oil filler cap?
There is usually a cap on one of the valve covers. There is an oil filler cap, you are just overlooking it. Look closer.
Where is the PCV valve located on a 2007 Dodge Durango 4.7?
It is in the back side of the oil filler housing. Look just behind the oil filler cap.It is in the back side of the oil filler housing. Look just behind the oil filler cap.
Milky substance on oil filler cap?
That would be moisture in the oil.
Where is the oil dipstick located on 2003 Saab?
try taking off the oil filler cap at the top of the engine...on my '95 turbo 900s that's where it was, the oil stick was attached to the oil filler cap.
Where is the dipstick on the CB750?
connected to the oil filler cap
