Quote:
Originally Posted by charmalu
I doubt there is anything wrong with your thermostat in the oil cooler. It has a wax pellet inside of it and is controlled by the temp of the oil.
Starts to open at 110C 230F, and fully open at 123C 253F + -.
Get an IFR lazer pointer temp thermometer and check the temp of the oil filter housing after a drive when you feel the oil cooler is not warm enough.
Charlie
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On my 617.950 it doesn't open until coolant reaches 200°F, which is just about never...
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 Did you just pass my 740 at 200 kmh in a 300SD?????
1978 300SD 'Phil' - 1,315,853 Miles And Counting - 1, 317,885 as of 12/27/2012 - 1,333,000 as of 05/10/2013, 1,337,850 as of July 15, 2013, 1,339,000 as of August 13, 2013
100,000 miles since June 2005 Overhaul - Sold January 25th, 2014 After 1,344,246 Miles & 20 Years of Ownership 
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