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Old 06-01-2014, 08:55 PM
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Diesel911 Diesel911 is offline
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Location: Long Beach,CA
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X2 on the neversize

No sealing is done on the threads.

You need a backup wrench between the Hose Nut and the Oil Cooler or the Hose Nut and the Oil Filter Housing. On the Oil Filter Housing you need to thin the Wrench Head.

Plan an alternate Rid to Work or other important Places because there is a good possibility one or both of the Oil Cooler Nipples is going to strip.

I just did this between a week and 2 weeks ago and see the Pic for the results. Both Nipples were in similar shape.

There is some ways to try to avoid stripping the Nipples and there is a Nipple Repair procedure but it requires the correct Tap Drill, a Tap and the repair Nipples from Mercedes and a Hacksaw and a File. Meaning the repair is not going to get done fast.
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Oil cooler hoses: Apply anything to threads?-stripped-oil-cooler-nipple-jun-1.jpg  
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