Hi, My 306 XRDT failed MOT on emmisions, reading 3.75 on the machine, Ii put in some diesel additive and took for a hard drive taking it up to the limitorin 3rd and 4th, when I had finished I was on my way home, slowing down it cut out and it is now dead, will not jump start or bump start, the engine will not turn over at all, the starter just clicks because it can't turn the engine over and when we tried to bump start it in 2nd gear when the cluth is released its like putting on the breaks, ....it had a head gasket less than 150 miles ago. I was planning on MOTing it and selling it, now I think I will have to just give up on it an let it go for spares or repair. any thoughts... Gavin