Try to get an Oil flush and then get them to put a good quality oil(take you own and give it then) in it before you do the long trip. I recently did a turbo change for someone and the reason it had gone was that the oil feed to the turbo had blocked...this happen's because the oil feed bango only has a 1mm feed hole.
Cold pack is basically a snow pack...has heated windscreen and a couple of other little things. In saying this I would also get the car put up on a hoist so you can check it for rust yourself.