Yellow/brown goop on oil cap...

[danewilson77]

Copy......I agree with 15-20 miles.

[MrMaico]

There is an exception to that. I used to have this issue, and then the mayo would disappear on the weekends because that's when I do my long distance driving. However, when I dropped my car off to get the suspension work done a whole state-and-a-half away last week, there was still mayo there. The mechanic told me that it could be a signs of a failing oil separator, which is a common issue on E46's. If you still get mayo after a long distance drive (I would say over an hour), then I'd be worried.

I sure am...

This may just be attributable to the brand of oil you're using.....

Years ago my old boss had a Chevy pickup with a small block in it and every time he'd make the 200 mile trip during the winter to visit his daughter the underside of the hood would be splattered with mayo from the breather/oil fill tube. He was running Pennzoil dino at the time and switched to another brand (Havoline maybe?) and it completely stopped spitting mayo after the change of oil brands.

Barry

[ryankokesh]

I was concerned about mine because the mayo didn't totally go away after an 1.5h drive. Looked like this at its worst; I have about a two-mile commute :-/



Took the car down to Nashville this weekend though and it's clean as a whistle now!


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[kayger12]

I was concerned about mine because the mayo didn't totally go away after an 1.5h drive. Looked like this at its worst; I have about a two-mile commute :-/



Took the car down to Nashville this weekend though and it's clean as a whistle now!


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Makes sense. If you've got a lot build up it could definitely take a while to burn it all off.

[az3579]

This may just be attributable to the brand of oil you're using.....

Years ago my old boss had a Chevy pickup with a small block in it and every time he'd make the 200 mile trip during the winter to visit his daughter the underside of the hood would be splattered with mayo from the breather/oil fill tube. He was running Pennzoil dino at the time and switched to another brand (Havoline maybe?) and it completely stopped spitting mayo after the change of oil brands.

Barry

I don't think so. I use the same oil as before when my mayo would disappear after a long drive. Now it doesn't seem to disappear but I'm still using the same oil.

I use Mobil1 0W-40.

[danewilson77]

Ryan.......That just doesn't look right. I don't care how much a car is driven. I would look into CCV valve issue.

Can't moisture like that "Hydro-lock" an engine?

[Newjack]

Ryan.......That just doesn't look right. I don't care how much a car is driven. I would look into CCV valve issue.

Can't moisture like that "Hydro-lock" an engine?

I thought I read somewhere that the yellow goop is a result of very short trips before the car can completely warm itself up. It takes the car to get warm before the CCV can fully start doing its job and recycle the moisture. I would guess that changing out the CCV system would resolve the issue, and to avoid taking very short trips in your car from a cold start.

As far as hydro locking the engine? I'm not sure if the goop would do that. I guess if it gets bad enough it would cause some problems for sure.

[MrMaico]

I don't think so. I use the same oil as before when my mayo would disappear after a long drive. Now it doesn't seem to disappear but I'm still using the same oil.

I use Mobil1 0W-40.

Well, so much for that theory. I thought I had seen you mention before something about using different brands of oil depending on whatever your mechanic was using. But if it's doing it with the same brand now it has to be something else causing it.

[az3579]

But if it's doing it with the same brand now it has to be something else causing it.

But whaaaaaaaaaaaaaaaa?????

[danewilson77]

CCV