Coolant leak drives me nuts!

[television]

The makers of K seal do one for head gaskets.

 

[bornfree]

The C240 with M112 engine is very unlikely to have a head gasket issue. That engine is almost immune to that problem and mayonnaise under the oil filler cap is more or less normal, especially in winter and/or under short run conditions. I would be looking elsewhere for the coolant leak.

Is it possible that leaks might be coming from the timing case seals and getting into the engine oil galleries

 

[bornfree]

My car is a C240 (W202) 2.4L V6, with 70000kms. The car drives ok, no overheating, no smoking whatsoever at exhaust. I am losing a lot of coolant yet there are no visible leaks from the coolant system hoses or radiator. When I opened the oil filler cap, the inside of the cap had foam on it, it looked like some white cream.

Whats your advice.