So I was driving on a country road and noticed my oil pressure go down to 3/4 from full... which NEVER happens on a diesel.

Pulled over, shut her off to see that oil was leaking very badly out of the oil cooler radiator part. This part is right beside the rad itself and looks like a "mini-me" version of the rad. It has two hoses going into it, obviously a send a recieve.

My question is, can I just bypass it with a rubber hose if I'm not in a hot climate? Does anyone know of ANY websites that sell this part? I could not find one and I know alot of sites. Please help. Also what do you think about engine damage? Do you think I did any?

Thank you all for your time, opinions and experience. Its much appriciated.

In my opinion it can be bypassed. If you don't want to bypass it and can't find an OE at a parts supplier or in a junkyard, you could use an aftermarket oil cooler.

__________________
1977 300d 70k--sold 08
1985 300TD 185k+
1984 307d 126k--sold 8/03
1985 409d 65k--sold 06
1984 300SD 315k--daughter's car
1979 300SD 122k--sold 2/11
1999 Fuso FG Expedition Camper
1993 GMC Sierra 6.5 TD 4x4
1982 Bluebird Wanderlodge CAT 3208--Sold 2/13

This is a pic of it from mercedes, PART #14, apparently its $650 LOL. Do you think ANY parts website would sell this part?

Omg $650 for this small part... I hope bypassing it wont damage the engine. If anyone knows of special parts websites that MIGHT sell this part please let me know.

Those coolers are notoriously expensive. Perhaps one off a 123, 116 or 126 might fit. If so, finding one in a junkyard becomes much easier.

__________________
1977 300d 70k--sold 08
1985 300TD 185k+
1984 307d 126k--sold 8/03
1985 409d 65k--sold 06
1984 300SD 315k--daughter's car
1979 300SD 122k--sold 2/11
1999 Fuso FG Expedition Camper
1993 GMC Sierra 6.5 TD 4x4
1982 Bluebird Wanderlodge CAT 3208--Sold 2/13

Is it leaking off the oil cooler itself or the hoses...?

__________________
[/SIGPIC]~cirrusman

1983 Mercedes Benz 300SD - Wife calls him "Chitty Chitty Bang Bang"
[SIGPIC]




1983 Toyota Tercel (Tommy, The little Toyota that could)
1965 Ford F100 (Grandma Ford)
2005 Toyota Sienna (Elsa, Wife's ride)


Gone:
1988 Toyota Pickup
2004 Subaru Outback

1987 Cadillac Fleetwood Brougham
1986 Volvo 740 GL Station Wagon - Piece of junk.
1981 Volvo 242 DL 2 Door - Hated to see it go. R.I.P.
1987 Pontiac Fiero GT

Cooler itself, if it was the hoses or O-RINGS's i'd just replace them

I don't think there are any o-rings in the system. At least there's not on 123's or 126's.

__________________
1977 300d 70k--sold 08
1985 300TD 185k+
1984 307d 126k--sold 8/03
1985 409d 65k--sold 06
1984 300SD 315k--daughter's car
1979 300SD 122k--sold 2/11
1999 Fuso FG Expedition Camper
1993 GMC Sierra 6.5 TD 4x4
1982 Bluebird Wanderlodge CAT 3208--Sold 2/13

So its either the hose leaking or the cooler itself? Would bypassing it do any damage?

help

I measured the cooler on our 80 240D. both hoses connect to the bottom.
3 1/4 wide, and 17" tall. and 18 1/2 to the top of the 2 alum. tubes.

The cooler from the W123/W126.
4 1/4 wide across the front. add in the top and bottom mounting points, 4 3/4 wide.
20 1/4 tall. 2" thick. one hose connects to the top, and one to the bottom.

They can be pulled from PNP for about $20.

I doubt you will be doing damage to your engine if you by passed it.
I have seen some engines at PNP w/o the coolers, but think the engines that have AC will have the coolers. my 240 has AC but not hooked up.
I think all the turbo engines have the coolers, mainly because of additional heat from the turbo cooling the bearing..

Charlie

__________________
there were three HP ratings on the OM616...

1) Not much power
2) Even less power
3) Not nearly enough power!! 240D w/auto

Anyone that thinks a 240D is slow drives too fast.

80 240D Naturally Exasperated, 4-Spd 388k DD 150mph spedo 3:58 Diff

We are advised to NOT judge ALL Muslims by the actions of a few lunatics, but we are encouraged to judge ALL gun owners by the actions of a few lunatics. Funny how that works

Thank you so much for the reply, I don't have AC or a Turbo so I guess I'll just bypass it for now. In the future I'd like to find a 240d with the same oil cooler (i like to stay original without paying $600 per part )

Theres not many junkyards around me if thats what you mean by PNP. Can anyone help me out if they know of junkyards with 240D's? I will pay.

PNP = Pick N Pull.

Where do you live? fill in you info, that will help you if some one lives near you, and also your mode of transportation in your signature.

240`s show up now and then, sometimes one and at times maybe 3 in the same yard.

you can look here in their web site, and under what ever tab it is, see what the inventory is in the various yards.

www.picknpull.com

this is 240D`s within 200 miles from where I live
http://www.picknpull.com/check_inventory.aspx?Address=95073&Lat=37.039104&Lng=-121.958687&Make=Mercedes-Benz&Model=240+Series&Distance=200

Charlie

__________________
there were three HP ratings on the OM616...

1) Not much power
2) Even less power
3) Not nearly enough power!! 240D w/auto

Anyone that thinks a 240D is slow drives too fast.

80 240D Naturally Exasperated, 4-Spd 388k DD 150mph spedo 3:58 Diff

We are advised to NOT judge ALL Muslims by the actions of a few lunatics, but we are encouraged to judge ALL gun owners by the actions of a few lunatics. Funny how that works

I live in Canada, Toronto.

If its rusted out could a rad shop repair it?