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      03-20-2017, 06:11 AM   #4
KCLARK
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Drives: 2010 E^)M% & 2013 JCW
Join Date: Aug 2009
Location: Maryland

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I asked my mechanic the question regarding reliability among the X5's, and he's worked on them all! He told me the 35i is the most problem free.
He also said that buyers get diesels for the wrong reasons and that they should be used for long commutes, not for short stop and go runs around town. He told me that diesels need to reach their operating temp and driving for 5-10 minutes then turning it off shortens the life of the electricals. 35d's are best when run for longer drives that are 30 miles or more from start up whereas doing short 5 mile runs over and over creates carbon build up a lot quicker.
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