Hi all, my name is Chris from North yorkshire got myself a Disco 2.5 on a M plate 147000 miles, the disco is a fine machine but i am experenceing white smoke on start up,this fades after a short drive,i was told it could be head gasket so off i went to a local Landrover specialist who is about 5 miles from my house,noticed no smoke from disco when driving, the disco to garage so when i arrived the mechanic popped bonnet took off expansion tank lid and said "yep head gasket gone" the water in expansion tank was cold, he explained about compressions and some sort of mis feed,totally baffaled me.Anyway what i was wondering was he has quoted me about £550.00 for head gasket skim and fit, full engine service and cambelt change is this about right or am i getting my eyes ripped out.Love disco but dont want to be scuppered. any advice regarding head gasket as i felt diagnosis was eaisly came to, cheers all.