I have the same issue like many others with the Nissan Altima 2002. The catalytic convertor blew off and it damaged the engine resulting in excessive oil burning. There is a transport canada recall related to this issue, but Nissan Canada claims that this recall was already done a couple of years ago and hence they cannot do anything. The recall states two defects and only 1 was actualy attempted to be fixed but according to Nissan it is not their issue any more. I would advice everyone in Canada to file a complaint against Nissan at Transport Canada for their failure to commitment on the recalls. read full review »