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  #1  
Old 11-14-2006, 11:16 AM
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Location: London, Ontario, Canada
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Oil Cooler (Again)

Hi Guys, I know the oil cooler post has been done to death, anyway I wanted to ask a few questions. My Oil cooler in my 85 SDL (engine is out of an 83 SD) never gets warm, and I mean NEVER, I drove it for 1 hour city driving and 1 hour highway driving and it was cold last night. So the oil must never get above 110.

However after changing my starter in my 85 SD, I started the car up and before it was even warm I had a puddle of oil leaking out of the oil cooler, when I tried to remove the oil cooler the top hose came of ok, the bottom hose took the threads .

So my question is, how can the oil cooler be leaking oil if the engine wasnt even up to temperature. The oil was definitly comming out of the oil cooler and not the hoses, (I blew air through the oil cooler once i had it removed and there was a leak.)

Is there an easy way to remove the stripped aluminium threads from the lower oil cooler hose?

has anyone repaced the MB hoses with an all hydraulic hose setup What were the fitting sizes used in the process?

Thanks.

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1984 Euro 300SDC, (4spd standard)
1986 Toyota Landcruiser Diesel HJ60 5spd X2

Gone but not forgotten (some sold, some stripped)
1983 300 SD, 1985 300 SD, 1983 240D, 1986 300 SDL, 1985 300 SDL, 1983 300 D, 1984 300 D, 1985 300SD, 1987 300 SDL, 1983 300 SD, 1985 300 TD Euro, 1983 380SEC, 1990 300 D, 1987 300D, 1982 300D, 1982 300D, 1994 E420, 1987 300 TD, 1987 300 D, 1984 300 D
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  #2  
Old 11-14-2006, 01:23 PM
Shawn D.'s Avatar
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Quote:
Originally Posted by Icefire View Post
So my question is, how can the oil cooler be leaking oil if the engine wasnt even up to temperature.
The oil cooler will still have pressurized oil in it when the engine is running, even if the oil is not flowing through it.
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  #3  
Old 11-14-2006, 01:27 PM
rrgrassi's Avatar
mmmmmm Diesel...
 
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The oil flow through the cooler is also controlled by a thermostat IIRC. My oil cooler gets hot pretty fast after running a bit. Check the threads on the cooler. If the threads are stripped in the cooler, I believe you will need to replace it. I would check with Jeremy in Oklahoma, or another wrecking yard before buying a brand new one.
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70's SPM #5608 Fairmont A-4 MOW car

06 VW Jetta TDI 280K miles

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  #4  
Old 11-14-2006, 04:35 PM
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Yes the threads on the cooler are stripped and the cooler is useless but can I save the oil cooler hoses, that is the question, If i have to replace the hoses Ill just go with an entire aftermarket setup.
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1984 Euro 300SDC, (4spd standard)
1986 Toyota Landcruiser Diesel HJ60 5spd X2

Gone but not forgotten (some sold, some stripped)
1983 300 SD, 1985 300 SD, 1983 240D, 1986 300 SDL, 1985 300 SDL, 1983 300 D, 1984 300 D, 1985 300SD, 1987 300 SDL, 1983 300 SD, 1985 300 TD Euro, 1983 380SEC, 1990 300 D, 1987 300D, 1982 300D, 1982 300D, 1994 E420, 1987 300 TD, 1987 300 D, 1984 300 D
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  #5  
Old 11-14-2006, 05:50 PM
rrgrassi's Avatar
mmmmmm Diesel...
 
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Quote:
Originally Posted by Icefire View Post
Yes the threads on the cooler are stripped and the cooler is useless but can I save the oil cooler hoses, that is the question, If i have to replace the hoses Ill just go with an entire aftermarket setup.
Yes, you can keep the hoses, just clean the threads. Usually a small flat head screwdriver like the kind used for jewelry repair will get the stripped thread metal out of the hose fitting threads.
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RRGrassi


70's SPM #5608 Fairmont A-4 MOW car

06 VW Jetta TDI 280K miles

03 VW Golf TDI 5 speed 400K Miles Engine died

RIP--Lost in fire...82 300D 322K was My Daily Driver-On the search for a w126 now...

90 Dodge D250 5.9 Cummins/5 speed. 400K
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  #6  
Old 11-14-2006, 07:59 PM
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if the rubber is questionable on them, you can take them to a hyd. shop and they will replace it for cheap. this way you could T in a temp gauge
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  #7  
Old 11-14-2006, 08:29 PM
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Location: Austin, TX
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Quote:
Originally Posted by Icefire View Post
the threads on the cooler are stripped and the cooler is useless
Your cooler can be fixed for about $5 in parts.

Oil Cooler Hose Source

See post #10

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