Trying to collect on a rust warranty is next to impossible.
If anyone here has ever collected please tell us. I know of one person who stood in front of a rust proofing establishment and had his sign
and said he would stay there till hell freezes over and jump up and down until they settled.
The company president came from Toronto and told him "We never pay out...ever. "All he said was" You don't know me, do you?, .... I will stay here forever."(He's had other causes in Montreal that he's known for) They did settle with him.
Not to many of us are willing to do that, are we?
There are a few good rust-proofing companies in the Montreal area.( ie: Crown Rustproofing for one.)
Find a location that removes more pieces and drills less holes in the body.
Ideally, your looking for a hot application of liquid grease that will solidify when cooled and continue creeping into the seams at a slow rate. Go with a rustproofing that's more costly and time consuming to apply.
The $115 quick application's miss a lot of spots and drill too much instead of removing key panels. The cheap applications don't really last.
If you're driving in constant salty conditions (Montreal winters), then that's what you need.
If salt get's into the inner fender seams(and it eventually will), you've got a big problem.
If you plan to keep your Benz for a very long time, then don't let it play in the salt. Get a winter beater
MB apply a cavity wax on under-body panels and this is an "OK" protection. I just wish that they would have applied it everywhere.(ie: doors, hood, seams, inner frame etc...)Happy hunting!!