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Old 01-15-2005, 12:04 PM
Benzcrusher's Avatar
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Join Date: Jan 2004
Location: Upstate SC
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W123 Td Oil Cooler Rant

I started my week end project: the oil cooler lines on Dieter. I just removed the oil cooler and as I feared, the threads are basically gone. Here are my thoughts:

Can the nipples on the oil cooler be replaced/ repaired?

I have a spare non-turbo oil cooler with good threads.... I know that the turbo cooler offers 33% more cooling surface, (6 tubes non-turbo, 8 tubes turbo) I am tempted to try it based on the notion that one of the tubes on the td cooler receives poor air circulation and that diesel are more efficent the hotter they run..

Anyone have experience with this issue?

"Shabby" 1978 240D with a 300D motor
1997 Volvo 960 wagon 245K
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Old 01-15-2005, 05:08 PM
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Join Date: Sep 2003
Location: Back in Colorado for now
Posts: 1,315
I think I'd just get a turbo cooler from a yark and call it good. One thing you can do it silver solder on some new fittings or have a radiator shop do it for you, but they'll only have ANSI fittings in inch sizes, so you'll also have to re-conn the ends of the cooler hoses.

Seems like another cooler would be the way to go.

1984 300D Turbo - 4-speed manual conversion, mid-level resto

1983 300D - parts car

1979 300TD Auto - Parts car.

1985 300D Auto - Wrecked/Parts.


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