Originally Posted by Stretch

Dear All,

I thought I'd add this information for those who have struggled with oil cooler lines on a W123 300D.

If any of you can not remove the engine mount in order to give yourselves the necessary space to remove and replace the oil cooler pipe lines (I got stuck because I didn't have the correct size Allen wrench) here is an alternative way.

This might sound a bit mad but remove the radiator, the engine shock, and the middle (oil cooler line) mounting bracket and it is a piece of cake!

Explanation:- I discovered this solution with the radiator already out whilst replacing the front crankshaft seal.

I've included a photo looking from the front of the car towards the back with the radiator, engine shock / damper, and mounting bracket removed. And another photo of the middle oil cooler line mount.