Every two weeks, the coolant light comes on and i have to refill it..I hooked the pressure gauge up to my car and pumped it up to 15 lbs and watched it slowly lose pressure, but couldn't see it leaking anywhere. I don't think its the head gasket because I drove around with the pressure gauge still hooked up and didn't see the pressure change much when i put it under a load. i didn't see any white smoke coming out of the exhaust, but there is a little goo underneath my oil cap as if there is moisture in my oil. I Changed the oil yesterday and it wasn't milky and there were no signs of water..If anybody has and idea of what the problem might be, please help me out..thanks

 

Your F'ed

 

radiator cap. dealership replaced mine when this happened to me. fixed the problem

 

that didn't fix the problem :/ ..still losing coolant

 

replace your head gasket get the head milled

 

Start cheap. Wrip car down and mill head, and block, look for cracks,

Checkwater pump, theyl leak when bad, rad cap (I think u did) hoses cracked, u may have a leak far up and haven't given it wnuf time to drip. Warm it to operating temp n let er run for like 20 min n look. It can't be just disappearing,