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Foam On Dipstick


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I checked the PCV system about a month ago, I was getting white goo on the bottom of the dip stick. Also replaced the dipstick o-ring on top and bottom.as well as the o-ring on the top of the oil filler cap.

As it got warmer out the goo is now gone but I'm getting a little bit of foam on the dipstick itself. The oil isn't over filled. Just did an oil change and when I emptied the bucket into my old oil container I could see bubbles on the top of the oil.

Drove today about 10 minutes to get gas and the foam is there. There's also a little bit of bubbles on the top of the filler cap.

The that came out wasn't milky at all, it was black, but did have bubbles on top. Also no oil in the coolant. The coolant is green and hasn't been changed in 3000+ miles.

Thoughts?

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Sounds like you need to do the catch can mod.

not needed.. this is typical in winter and short trips

Try Seafoam in the oil about 15 miles before the next change... sounds like restriction, causing excess oil pressure....

NO NO NO NO NO NO do NOT put seafoam in your oil

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Shot down again! Why? It has great results with other suggested uses...

the only time seafoam should be used... and I say SHOULD not MUST be used is in the intake... suck it up through a vacuum line in the vacuum tree

I will never do seafoam again since I did it on my NA... 1 week later my CAT got clogged and I had to get a new CAT

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do you do a lot of short trips?

was the car driven a lot this winter?

Short trips, not really, 25 miles each way every couple days. Driven every 3-4 days in the winter so yes. I've been fighting excess pressure for a long long time. I'm at the point now where I have to decide to put money into this car and want to get this figured out before I move on.

I'm guessing bubbles = condensation/moisture? Is that what I'm dealing with?

Long term effects if I change my oil every 3k?

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Sounds like condensation to me. Did you remove the oil cap to see if the oil was milky?

I would try removing the dipstick tube and cleaning it in a parts washer or use some brake or carb cleaner and clear out the inside. Re-install and monitor it every couple of days.

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Sounds like condensation to me. Did you remove the oil cap to see if the oil was milky?

I would try removing the dipstick tube and cleaning it in a parts washer or use some brake or carb cleaner and clear out the inside. Re-install and monitor it every couple of days.

No milky oil anywhere. It looks great. When I looked at the PCV system I also cleaned the dipstick tube and it did indeed have buildup on it. I cleaned it well. So I don't think that is contributing to it. If I put a piece of paper over the dipstick tube and rev the motor it blows the paper off, so I think there is pressure in the system.

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