Oil looks clean on the dip stick, but looks dirty in the valve cover?
9 Answers
Sounds like you have sludge build up. How often do you change oil?
Every 5,000 miles and only using mobile 1 full synthetic.
That is very good but if you have sludge I would shorten the oil change interval. I recommend removing the valve cover for inspection.
If I find any sludge, what would be the best way to remove it? What do you recommend?
I would probably not use a engine flush but would change the oil more often. How many miles on the car?
It has just over 178,000 on it now. Runs like a brand new car, and still powerful for what it is.
If you do use a flush this is the product I would try - LiquiMoly engine flush. I have not used it but their other products are great.
Suggest you replace the PCV Valve and test the system for proper function.
Have you ever noticed an issue with Excessive Oil Consumption?
