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  #1  
Old 10-20-2004, 12:55 PM
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How hot should the oil cooler feel?

My oil cooler feels cool to the touch after long drives. Should it?

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  #2  
Old 10-20-2004, 05:05 PM
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Thumbs up Cool Cooler

According to MB service manual, it just says "warm to the touch". I forgot the thermostate rating, but it was hot enough that it would be noticably warm.
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Old 10-20-2004, 05:16 PM
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one end should be HOT after getting the car up to running temperature.
As in cannot hold with your bare hand for more than a few seconds!
I can't tell you right now which end (I just drove the W124 this afternoon) but I suggest that if its not getting HOT, the thermostat in the oil filter cannister might be stuck.
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Old 10-20-2004, 10:10 PM
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Oil thermostat should open around 110*c oil temp.

If it's cool to the touch all the time, I check it out asap. Oil gets very thin above 110*!
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Old 10-20-2004, 11:19 PM
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With the engine at 80*C, my oil cooler is warm to the touch but not hot at all at the top, but HOT at the bottom. I don't know if thats good or bad but its one more observation to add to this thread.
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Old 10-20-2004, 11:24 PM
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If I drive gently mine stays cool or warm, but if I drive at a quick pace or do a lot of high rev acceleration, it gets quite hot. I can always tell when it is in use because my oil bars fall to about 1.3 or so(at idle), when its closed it is just above 2 bar. I burned myself on my oil filter canister today while adjusting my Injection Pump damper pin, which was bolted all the way in, as tight as it would go, I have no idea who did that to it. I have it several turns out, and its a noticeable difference.

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