Anyone experience frozen diesel problems?? in General Discussions Posted December 4, 2010 mr squirrel, the mechanic was very certain that the diesels froze up, i have parked it in the garage and put a charger on the battery.... so will check it tomorrow as he was 100% sure it will fire up. i changed the glow plugs as its been weak to start on cold mornings anyway. So you wouldn't reccommend a bit of petrol in the tank?? i also thought that diesel doesnt freeze as my mates and other family diesel cars have been fine.