I added some oil this afternoon for the first time in several months (second time since I got the car in July). When I opened the cap, there was a creamy yellow goo underneath. It look like it could have been thickened oil. I have never seen anything like this, but then I got to thinking that the oil isn't poured directly into the engine, but rather into a hose that leads to the engine. It didn't look like there was more down the hose (as best as I could see). Is this normal, or should I be concerned? FYI, the car is a 2007 C4, bought new by me and the only oil added (other that by the factory) has been Mobil 1 0W40.

 

I believe what you're seeing is water condensation in the oil on the fill cap. In cold weather any water vapor in the engine will condense in the cold areas. The way our oil fills are designed makes the cap quite cold and therefore it will condense there. This can be aggravated if you typically use the car for short trips that do not allow the engine to get heat soaked. I've seen this on many cars I've owned. Typically it will go away when the weather warms up. Of course, the way to know for sure is to drain the oil and take a look at it.

 

You need help...autosexophillia

J/K above post probably nailed it...

 

I try to extend my outings so that the oil is at full operating temperature for at least 15-20 mins. This often requires I take the long way home. Not exactly a great sacrifice to make, this keeps the oil free of condensate and my brain free of cobwebs. Great car.

 

yeast infection?

 

I'd add some Penicellan with your next oil change

 

Chances are, if the sludge is appearing in your oil fill tube, it is accumulating in other areas if your engine. You MUST bring your engine to maximum temperature for longer periods of time if you want to redeuce the sludge risk. There is no other way of eliminating it.

 

I got The Yellow Goo While I parked my Car in The Garage during Winter days .. Looks Like Condensation .. I would Park it for 2-3 days and goo when the Temp was below 30 F .. But The Temperature was above 50 .. no more Yellow Goo

 

condensation.. i get it once in a while.. just wipe the cap clean and drive the car hard...

Anyone have any tips to making the car smell like new? I could drown the car in cologne but I like the natural leather smell.

THe car just does not smell the same after spending 2.5 months at the body shop. It smells like a wet rag/body odor. I tried cleaning the leather with leather cleaner but no luck.

WOuld abox od baking soda for a month work? the car didnt use to smell this way before the body shop visit.

sorry for the hijack

 

h#$d cheez

 

The box of Baking Soda will help quite a bit. I have used them on boats but not on cars so give it a try.

There is another possible issue your car might have a "Fungal Infection". For that you can try something like Lysol spay inside. I would remove everything out of the car and put in sun Fungi hate the sun! Start the car up, run the AC and spay some Lysol (or even some AC cleaner – from Auto Shops) through the air intake, turn of car, spay some Lysol in the car, especially on the carpet, close the car, spray the interior carpet (both sides) with Lysol, wipe of everything else (don’t forget the stuff in the trunk), spray a little in the trunk and allow everything from inside the car to air out. Wait a few hours (overnight) and drive the car with the windows open (it is nice weather!). That should fix it and leave you with a nice fresh interior.

 

You need to get out and DRIVE your car!!!

 

It's just water from condensation as mentioned before. Water makes oil turn white if left to sit for days. Some oil was probably on the outer edge of the cap and was exposed to the condensation. I wouldn't worry about it too much.

 

Common for a little of the whitish yellow stuff to appear in the filler tube. Try Zaino leather treatment to renew the new leathery smell.

 

just drive it longer with the temp at normal operating level and you should be fine.