had a burn up tonight and all of a sudden a huge amount of black smoke was pouring from my exhaust followed by a big flame, I pulled over to the hard shoulder (mate was behind me and seen everything) at first I thought it might have been a pipe but it wasn’t, rolled the car back and a small puddle of oil was underneath. started the car and huge amounts of white smoke filled the motorway so got it towed to my mates garage (shut obv at 2 am) started it and was fine, no smoke gave it some gas and just as the turbo should be spooling ar roughly 2k rpm white smoke was coming out the exhaust...not sure, and praying it’s not my turbo. Any ideas?? thanks in advance guys