Hi all,

I want to add an oil cooler to my 2003 4.6 engine. Has anyone done this before? I am thinking i can just by the lines and cooler for a 1999 and up 4.0 engine and it should bolt right on.

Oil lines from BP UT:
Part Number
ESR4627
$84
Land Rover
engine ->cooler, RH

PBP101100
$65
Land Rover
cooler-> engine, LH

And then I will get a used oil cooler that was on a 99 and up.

Anyone see any 'con' to doing this? Not sure why they deleted it on the 4.6 but i dont see how it could hurt especially since i tow somewhat regularly in the summer.

Think it will effect my oil pressure?

 

I haven't researched this but I believe when they deleted the oil cooler they also changed the front cover of the engine and eliminated the port where the oil cooler lines connected. It may not be as easy as it appears. If the system is leak free it will not affect your oil pressure.

 

I am 95% sure the oil cooler lines connect right above the oil filter and is the same on both the 4.0 and 4.6. Some people that have added an oil pressure sensor on the 4.6 have utilized these ports.

The oil pressure drop was an after thought and i maybe over thinking it but I know its going to create some sort of loss. Just like in any piping system, the pipe alone creates a pressure loss, bends, filters or anything that re-directs flow will create even more of a loss... if these things didnt puke out oil pump parts i wouldnt even had thought about it...

I need to get a 4.0 and 4.6 side by side and see where the cooler goes and how the lines ran...that is more of my concern as far as install...where the cooler is mounted and how the piping is routed... with some of the body changes 2003 i dont know if they changed any of the mounting points or made it so you cant route the lines.

I was hoping someone out there had tried this before... hate being the test rat...

 

The cooler ports are just plugged off with a plug & O-ring. The radiator / supports are different. I would also add a thermostatic valve so that the cooler is only cooling when needed, that's just me though. All in all the job isn't much of one.

 

Supports are differnt...thats what i was worried about...i will have to figure out where to mount it and how.

Did the 4.0 come with a thermostatic valve?

 

NY, call me.

 

I was incorrect in the above. Just had a look to verify and the mount on the radiator is there on the 03-04 for the cooler so it's just a bolt on. I'm really sorry about that, should have double checked first.

 

just use a sandwich adaptor on your oil filter and a universal oil cooler, you can get them both on ebay for less than the price of one NOS hose.

 

I have the sandwich plate already installed with an oil temp and pressure gauge. There are still 2 additional ports i can utilize on the sandwich plate or use the stock ones located above.

Does anyone know if the oil cooler on the 4.0 has a thermostatic valve that keeps the oil from circulating through the cooler until it reaches a certain temp? A lot of the universal kits come with a sandwich plate with a thermostatic valve which would have been nice but i already have a sandwich plate on there....

My concern would be in the winter time during start-up..

 

The lines and cooler will bolt right on. There is no thermostatic valve. It will be just like a 2002.