Help! Coolant leak - dripping off of oil cooler. Can't find the source!

[DaveLinger]

I figured it must be the cooler itself so I just spent a couple of hours (huge pain in the ass) replacing the oil cooler, but the coolant leak is exactly the same as it was before.

I've owned the car for a few years and it never leaked a drop. Went to drive it a week ago and it said the coolant was low. Topped it off and drove away - 25 minutes later it said it's low again.

It's a relatively major leak - probably 2 big drops per second. I've done my best to look for the source but I just can't find it. I've removed and inspected the expansion tank and it's definitely not leaking. There's pink residue on the bottom of the transmission pan, but I assume that's just from where the coolant has been blown back as I've been driving. It consistently drips off of the oil cooler housing.

Anything else obvious I should check before I pull the fender liner and rad support?

[MSq5]

A common source of leaks is the area of the PCV coolant pass through and thermostat located, unfortunately, under the front of the supercharger.

I'd first look at all hoses and clamps for the entire coolant system, especially those inside the engine bay including the visible coolant lines going to and from the supercharger's two saddle intercoolers. Hopefully you will find the leak.

If not, you may have to consider pulling the supercharger.

[DaveLinger]

Unfortunately, I think you may be right. Come to think of it, I remember squeezing the upper radiator hose to see if it was full of coolant and there was a squeak/hiss/leak sound coming from the area of the thermostat housing.

Even if you remove the front clip, you have to REMOVE the supercharger to replace that flange?

[Waffles_s4]

Power wash the engine bay, and trace the leak right after. Remove belly pan if u can

Sent from my SM-G935W8 using Audizine mobile app

[jsh139]

I'm assuming you checked the water pump as well? That's a very common source of leaks for this car. Just had mine replaced because it was leaking (2010 with 108K miles).