Originally Posted by HumanMode

Hi all, I am in the very unfortunate situation of coolant getting into the oil of my 2006 SRT. Engine not missing or blowing white smoke. Issues were coolant loss, obviously, and milk-froth oil. Modifications known to me, but before my purchase, were a supercharger pulley and tensioner, and ECU tune. The engine has just ticked over 100,000kms.

The car is with European car mechanics here in New Zealand. The company is well rated, and obviously trusted with expensive and top notch cars judging by the workshop, but it is the first time they have worked on a M112 engine. They are very considerate and good communicators.

There was no external coolant leak. They have replaced o-rings and tested oil cooler. Flushed the engine. Leak remains. They have removed the supercharger to follow possibility of the coolant getting into the engine from the intercooler - which are notorious to fail on the M112. But they say the intercooler is not leaking and couldn't leak into the oil anyway. They are now about to access and check the head gasket. Everyone says the heads never crack on these engines, so I remain hopeful.

I'd appreciate your input on things the mechanic might not be aware of with this engine that they should know - likely causes and fixes.

I'm trying to remain optimistic. Anything fixed now is far less likely to need to be fixed later! I love the car, so I have to pursue the engine fix. While I'm paying for this large piece of work, and assuming the gasket is worth fixing, is there anything else I could be replacing or doing at the same time.

Hey, even some reassurance would be well received right now!