I recently convinced a friend of mine to begin changing his own oil. He has a 2009 Dodge Journey and wanted to send a sample to Blackstone before the warranty was up. Yesterday he gets a phone call from Blackstone concerning the extremely high wear metals in his sample. I haven't seen the report but I suggested he do another sample in 3,000 miles and get it to the dealer to have it documented. I did warn him that most likely the dealer will not have any idea of what a UOA is.