it all started jerking and stalling yesterday so i put gas treatment in it and it did nothing but overheated and started steaming like crazy and died, I only owned this vehicle for 2 month's now, so I just thought it would be head gaskets. I got everything ripped apart, but some cylinder walls are really full of coolant is this normal for headgasket leak.(I know there should be some coolant but I mean every cylinder was coolan in it.) well do you think the bottom end is gone now and what should I look for to see if it might be something else, craked block .