good old dv6 oil problem May 31, 2013 0:34:34 GMT 1 Quote Select PostDeselect PostLink to PostMemberGive GiftBack to Top Post by wheelnut on May 31, 2013 0:34:34 GMT 1 May 20, 2013 12:58:12 GMT 1 grimep said:... I couldn't see any info in tech dataIt might be called a "heat exchanger" in this case where oil and coolant pass through the same unit.