Free Auto Repair Help

Radiator Cap Full Of Sludge

Question: I have 1996 Chevy Camaro V6 it has sludge in top of the radiator and you can dig it out with your finger. It looks like gobs of grease. Can't figure out where it came from it looks like a bad kidney.

Chevy Radiator Cap Sludge

Answer: This is actually a common and almost normal condition with the orange Dexcool antifreeze when it has not been changed in a long time. It develops this sludge. The formula makeup has been changed from what it was the first few years it came out.

It is also possible you have an intake manifold or cylinder head leaking. When combustion gases get into the cooling system, it causes this on the old orange coolant.

Add comment

Security code

Dragstrip Video Cl...
Free Pics of Ponti...
Picture of Gold Ol...
2010 Buick Regal G...
The Saturn Relay S...
Red Race Camaro

Question Lists By Topic

Battery or Alternator - | - Brakes - | - Check Engine Light - | - Steering - | - HVAC - | - Tires or Suspension - | - Transmission - | - Engine Noises