Armchair diagnosis requested! Any thoughts on what I should check/where I should start looking would be appreciated.
Car is a 2012 Boss LS, Stock powertrain.
Was at Road America this weekend. On Sunday afternoon after running a day and a half already, was out in my second-to-last session. About 6 laps in. I'm on the front straight in 5th gear at WOT somewhere around 5k RPM (accelerating down the straight). I think I get a whiff of a faint oil smell and look in the rearview mirror and there is a seriously impressive amount of white smoke just pouring out of the back of my car. I may as well have been James Bond and just hit the smokescreen button to try and shake the bad guys. I immediately let off and got off line in case I was dumping fluid. Coasted down to turn 1 and then got back on the throttle gently to get around and out of harms way and no smoke, no smell. Limped it around and pitted out. No smoke, no smell, nothing.
Checked it over in the pits - engine compartment is totally clean and dry, no evidence of oil being sprayed. No residue in the tailpipes, no visible leaks on the bottom end. Passenger side catch can had maybe 1/2oz of oil in it. Ran a scan on it and there's no codes. Started it several times, no smoke. Oil level in the pan was normal, and oil looked fine. Bailed on the last session and drove it gingerly 60 miles to my hotel without issue, and then 250 miles home yesterday. No smoke, no smell, nothing.
When it happened, all guages were normal. Oil temps were around 260, Oil pressure was steady at 80 and never dropped. I've watched the lap video and listened to the motor and it sounds perfectly fine - no missing, no hiccups, just smooth and strong through the whole thing.
Any thoughts on what could've caused this, what else I can check? I will likely have a compression test run just to be sure, but I'm at a loss as right now it just seems like a fluke.
Car is a 2012 Boss LS, Stock powertrain.
Was at Road America this weekend. On Sunday afternoon after running a day and a half already, was out in my second-to-last session. About 6 laps in. I'm on the front straight in 5th gear at WOT somewhere around 5k RPM (accelerating down the straight). I think I get a whiff of a faint oil smell and look in the rearview mirror and there is a seriously impressive amount of white smoke just pouring out of the back of my car. I may as well have been James Bond and just hit the smokescreen button to try and shake the bad guys. I immediately let off and got off line in case I was dumping fluid. Coasted down to turn 1 and then got back on the throttle gently to get around and out of harms way and no smoke, no smell. Limped it around and pitted out. No smoke, no smell, nothing.
Checked it over in the pits - engine compartment is totally clean and dry, no evidence of oil being sprayed. No residue in the tailpipes, no visible leaks on the bottom end. Passenger side catch can had maybe 1/2oz of oil in it. Ran a scan on it and there's no codes. Started it several times, no smoke. Oil level in the pan was normal, and oil looked fine. Bailed on the last session and drove it gingerly 60 miles to my hotel without issue, and then 250 miles home yesterday. No smoke, no smell, nothing.
When it happened, all guages were normal. Oil temps were around 260, Oil pressure was steady at 80 and never dropped. I've watched the lap video and listened to the motor and it sounds perfectly fine - no missing, no hiccups, just smooth and strong through the whole thing.
Any thoughts on what could've caused this, what else I can check? I will likely have a compression test run just to be sure, but I'm at a loss as right now it just seems like a fluke.
