Oldblue

The coolant hoses bring the coolant to the oil cooler to take the heat out of the oil. So it wouldn’t be an actual cooler then just a passage for the oil

RJ_RS_SS_350

Isn't the "leak" on these coolers an oil leak? But besides that, why would you want to NOT utilize it for oil cooling?

donbrew

IIRC, the reason for the cooler delete was an internal redesign rendered it redundant. So, I don't think it is a good idea to remove it. I would put new oil seals in while it is out of the car along with a new timing set, the oil spigot needs updating at least.

I do wonder why yours is missing? I thought that all 2006 2.4L and some 2007 2.4L had them. Are you sure you have a 2.4L not a 2.2L? You could tell by the VVT embossed on the valve cover. OR by the 8th digit in the VIN; F=2.2L, B=2.4L.

Oldblue

Looking at the pictures of the engine in the back of the pickup, the oil cooler oring are leaking and need to be changed.
That being said, as Donbrew points out check to ensure you have a 2.2 as this 2.4 won’t run if you put it into your HHR.

aradmahogany

I think they stopped producing the oil coolers mid year 2006, my 2006 2.4 doesn't have the cooler.

Oldblue

Perhaps relocate the oil cooler for air cooling instead of coolant

https://www.chevyhhr.net/forums/prob...located-52605/

Skeeter27

It took about 10 hours, but It is done!

I replaced the O-Rings in the oil cooler and I had to put a new exhaust manifold on it.(The one on the used engine and the one that came out of my HHR were BOTH cracked.)





I also polished the headlights...



Before



After

donbrew

Flat rate is 10 hours, you did good.

ZTony8

That's an early engine. The cooler disappeared soon into the production run.