When I bought my new compass, I did some research on rustproofing and undercoating. I didn't get it done because the vehicles made nowadays are made much better than older cars for anti-corrosion. The metal is galvanized which doesn't rust as much. You'd pretty well have to ask yourself what the climate you are living in is like ( especially salted roads ) and where you might be driving it. I live in Vancouver, B.C. where it might rain alot, but in recent years very little snow. I keep my compass in a dry locking garage so it can dry out every night.
I actually went with the rustproofing since my Compass will sit in a heated garage as well in the winter where the frozen snow and ice will always be melting thus the Compass will be subject to alot of salty water/moisture instead of it being in a frozen state if it was left outside.
I am updating my old message after doing more research on this subject. I didn't get undercoating, rustproofing, or paint protection done because I believe it doesn't really need it. As I said in my previous posting, the vehicles made nowadays are anti-corrosion protected (galvanized) as our warranties cover this for a certain amount of time. I've read that sometimes vehicles are more prone to rust after having this protection, because it might not be done properly. They drill holes in the body and frame, and may clog the drain holes causing the moisture to stay where they should not. If you live in a climate where it doesn't snow much, I'd say forget about the added protection. But if you live where a lot of the roads are salted for a long time, maybe get it done, but somehow make sure it's done properly. As for the paint protection, it again depends on the climate. If the weather is extreme either very hot or cold, maybe get it done, but otherwise I believe the paint is protected enough with the clear coat.
Just a few notes on the Mopar Mastershield protection:
Rust Inhibior-Is a fogging spray method, wax based which protects from the inside out penetrating crevices, cavities and other rust-prone areass for maximum protection, forming a water proof, salt resistant seal. no drilling required. One time application with a lifetime warranty.
Paint Sealant -forms a tough shiny protective polymer seal on your clear coat which contains a UV blocker which helps dark paints against oxidation and fading. Encourages water to run off leaving minimal amount of water beads which form water spots.
Undercoat -black wax-based formula which seals the underside of your vehicle against road salt, dirt and stone and gravel abrasion. Forms a "blanket" that hleps insulate your vehicle form the heat and cold and acts as a sound deadener for a quieter cabin ride.
What about these new electric box units that run a small current through the body and frame? Dealer tried to sell me this at the time of purchase. A buddy at work got his installed on his truck for $100.00 for the box and installation. Did anyone get this done at the time of purchase? Would it effect my warranty if I added an aftermarket one?
I went for the dealers paint protecor and hot wax based rust proof treatment. Seems they do not do undercoating.
As I plan keeping the Compass a while I went yesterday and had the car re-rustproofed and undercoated (hot oil based spray) by and independant rust proofer, who gives a life time warrentee if you follow repeat yearly. I've seen the proof that their product work, I started using them when my BMW was about 10yrs old and starting to rust on the front fenders which were replaced at 8yrs with non factory pieces. The rust did not progress over the next three years. Anyway they pointed out the the dealer did not make any holes to rust proof in the rockers, doors, pillars, etc. . . only seemed to have sprayed their wax around the door seals etc, like where you could see it. . . also the dealer stands behind a 5yr against rust perf . . .the cars are really built well enough that there should be not rust in 5 years.
I don't feel bad about doubling my protection, We have nasty winters and lots and lots of salt and calcium on the roads here.
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