Has anybody had any issues with excessive oil consumption on their manual trans Cobalt LT...not SS? I have 11,500 miles on it. Mine kicks out a puff of smoke from the tailpipe after decel/ downshifting. RPM nevers gets over 3200 rpm when downshifting but I nearly always get a puff of smoke from the tailpipe at the end of downshift. Occurs most frequently when making decelfollowed by aright turn. It has done the same thing on a straight line decel but not nearly as consistent. My Dealership implies I'm driving aggressively but I'm averaging 33-34 mpg...so I doubt that is the case. The vehicle is using about 1qt every 500 miles.

Seems to me there's a problem here but not getting a lot of interest from GM yet.

 

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Try posting your question in the cobalt or general tech section of this forum for more responses. Good Luck.