giosoccer20

found yellowish residue underneath the oil cap a few days ago. I've posted here before that I've had an oil consumption problem, without any head gasket symptoms, so I bought everything to do an ls6 valley cover update to fix the pcv problem. I chose not to do the upgrade until the spring because of the cold (I don't have a garage). So is the yellow stuff just condensation from not letting the engine heat up thoroughly? It's been insanely cold here in southeastern PA, and I have indeed been taking short trips in the morning to the gym, which is only 1 mile away.

The yellow stuff even turned to ice in the cap, which is pretty crazy. I'm hoping it's not a head gasket, or else I will push the car off a cliff lol

coolant levels/color looks fine, I have no head gasket symptoms, other than that cap stuff. Here's a couple of photos to help

Those blisters are actually ice which I had to warm and then wipe off
[IMG][/IMG]
[IMG][/IMG]

giosoccer20

sorry about the ginormous photos, I have no clue how to fix that. they're from imgur

RPM WS6

iTrader: (3)

Looks pretty typical of short trips in cold weather.

Is the dipstick clean?

99Bluz28

iTrader: (35)

If you're not letting the engine warm up before you start driving to the gym, then start. What you're seeing is condensation and with very short drives it's not going away, it'll only get worse since the engine has not got hot enough for the water to evaporate/boil off.

slaterdump

iTrader: (1)

Yep, short trips in cold weather will cause that. I've never had that problem in my Z28 (probably because I try to avoid doing it), but have seen it in one of my old beater cars.

giosoccer20

yeah you guys are absolutely right! I took it for a 25 min drive today to Delaware, after letting it warm up for 10 min, and when I got back, there was absolutely nothing on the cap. This is a huge relief!

turbotbirds

Yep, moisture for sure. On E85 and methanol it is even worse.