Going through the MB factory Service Manual for the M104 engine, and I noticed that on the R129 series (300SL), the M104 engine was setup with an engine oil cooler.

Has anyone retrofited one of these? Why only on the R129 and not the the W124 E320's or the C280/C36?

Would it be wise to install one?

Thanks again,
:-) neil
1988 360TE AMG
1993 500E

Here's an image link of the setup: