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Old 11-08-2013, 09:53 PM
97 SL320 97 SL320 is offline
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Join Date: Jan 2012
Posts: 7,515
Or when the oil is cold and thick otherwise the filter element will crush. This is a standard item on all cars.

A low rent way to control an oil cooler, a bypass valve is placed across the cooler lines rather than a thermostat.
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