tnspd

Ok, I put the wifes C7 on my lift yesterday and noticed a drop of fluid starting to form under the right front side of the engine. The oil looked green in color so I know it was not antifreeze because it is orange. What could be leaking that has a green color fluid in it? I could not tell where the fluid was coming from. It is pretty cramped space under there. There has been no drops on the floor of the garage either.

lgodom

I believe some members have reported greenish oil, maybe due to a dye. So, it could be engine oil if it feels like it.

Your user name looks familiar. Did you happen to trade in a 5th gen Camaro for the C7?

tnspd

No, I have a 5th Gen Camaro SS, a 5th Gen ZL1 Camaro , and this C7.

Why would die be in my oil. I have not had it to the Dealer to put die in it? Maybe it is residual oil with die in it from the factory when they checked it or something?

Theta

Green, as I learned yesterday, is the dye they put in the AC system to check for leaks.

How do I know? I unbolted the wrong bolt and had some r134a spray out at me. Green dye bubbled and dripped.

tnspd

So it could possibly be an AC fluid leak?

travisnd

GM also uses green thread sealant sometimes. The green is designed to seep into threads after a bolt is tightened I believe. FWIW I bought a new LS2 water pump for a race car build and the heater core ports had excess green goo on them from where they were pressed into the water pump housing. Had to clean it off before install. It was like green sealant. Might be something like that.

tnspd

I'll clean it all up and keep an eye on it to see if it returns. If it does I'll take it to the dealer I guess.

I just like to know what the problem is before I take anything to the dealer. That way I know what the dealer is suppose to be doing to fix the problem. I have seen too many dealers mechanics just guess at what the problem is by changing parts until the problem is fixed.

Theta

It's the same as Loctite Green. It's a slow-acting penetrant.

That will show up as a dark green color, while the AC dye will be a lime green color.

Hope that helps.

LT1xL82

You might want to drag your feet cleaning it up. If it is green Loctite may still "wick" its way into threads. The stuff works via capillary effect and it can take a fair amount of time.

tnspd

This fluid is a lime green color so it must be AC fluid. It is very thin feeling, not thick at all.

Theta

Bingo - AC fluid. If it's leaking up toward the nose, check the two bolts holding the pressure hoses to the condenser. If it's farther back, swing it by the dealer.

Now you can tell them what it is so they don't have to hunt or say 'we don't know'.

SpaceCadet

Agreed prob. from AC system...

Green Loctite is for permanent applications, not threads

Theta

It's great to use on seized threads, as I've found out several times before with seized turbocharger studs. Back a nut onto them, Green Loctite, wait 24 hours, pop them out.

Also, it never occurred to me to mention it, but even Green Loctite cures fully within 24-36 hours, the the drip/drop would be either gooey or solid.

So AC it is.