Thanks for the replies. It appears that an LTZ that Edmunds tested did the same thing, but mine was on start up.
"So it's no surprise that our LTZ slithered through our slalom course in a composed and unruffled manner at a respectable 64.5 mph. It also hurtled around our skid pad at 0.80g — better than most similarly priced sedans. And that's no smokescreen.
But a cloud of smoke billowed from our Malibu's tailpipe during its clockwise run around the skid pad. Further investigation revealed that some oil had been slung past the valve cover breather and into the intake tract. We've tested our long-term Aura XR V6 the same way and have never seen this behavior. And we were unable to replicate the smoke by flinging the Malibu at a few freeway cloverleafs we know."
http://www.edmunds.com/insideline/do/Drives/FullTests/articleId=123695
"So it's no surprise that our LTZ slithered through our slalom course in a composed and unruffled manner at a respectable 64.5 mph. It also hurtled around our skid pad at 0.80g — better than most similarly priced sedans. And that's no smokescreen.
But a cloud of smoke billowed from our Malibu's tailpipe during its clockwise run around the skid pad. Further investigation revealed that some oil had been slung past the valve cover breather and into the intake tract. We've tested our long-term Aura XR V6 the same way and have never seen this behavior. And we were unable to replicate the smoke by flinging the Malibu at a few freeway cloverleafs we know."
http://www.edmunds.com/insideline/do/Drives/FullTests/articleId=123695
