From what she told me, its “goopy” for the first few days, but after a week or so it forms more of a waxy film that will eventually wear away (its a yearly application). Various applications could differ though, this is more pertaining to Carwell. After seeing a friends car, I was convinced. His 2007 looked just as good as my 2013…
after working on plenty of cars/trucks with the oil undercoating on them I will never get it done on my vehicles (nothing against carwell!) just a lot of really good car washes to get the salt off throughout the year, if you work on your own car and have to do anything semi involved like a fuel pump, hell even reaching for some oil filters your end up covered in that shit. no bueno.
I don’t suggest changing you oil within a few weeks of the application. But, everytime after the winter I’ve need to work on my truck bolts broke free no problem. I thought for sure I would need heat on some things, wheel bearings and tie rods for example, I got everything off with a 1/2 socket wrench minus the axle nut (BFBB).
Check out their site for more info: http://www.carwell.com/
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I completely disagree with svtcobra unless you are talking about Schmidts. Are you sure you worked on cars covered with CP-90? It drips like a bastard for a bit right after application but it is no worse than road grime when you want to work on your car after a while. Comes off almost like gritty dried up oil that you get when you spill it all over your frame when removing a oil filter and never washed it off.
luke it must be Schmitt’s, I thought they both used the same type of applicant.
Carwell is more like cooking spray. It feels “greasy” at first but gums up over time. At the end of the winter season a good handwash cleans the body panels like new. Anything underneath you can hit it with a stiff brush to help loosen and “caked” up stuff. But the bolts, lines, seams are super clean.
Schmidts uses that rust-stop shit that is like watered down motor oil.
I believe there was another thread here with a member who showed before/after winter pics on his truck…you get a good idea of what type of state the CP-90 dries too. Maybe if I am ambitious enough I will try to post some pictures a week or so after my application
That was me in good internet fashion saying “I’ll totally post pics…you can count on me…I’ll drop everything as soon as I get home and do it.” But, like ALL forums. I forgot. Ooops 
If you’ve ever noticed the Fed Ed trucks that get that black/gray spray lines down the sides of the truck; that is what it does. It sort of streaks out of all the crevices from pooling up during the application. I honestly left it the whole winter (not one wash) then washed in the fall. Sure that first wash took a while but the truck came out SO clean.
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Man, I sounded pissed in the thread towards the end, LOL: http://www.nyspeed.com/showthread.php?34471-Underbody-rust-prevention
For all of the fans of Carwell, you can buy both the light and medium weight oils (T-32 and T-40, IIRC) they use in five-gallon pails, and spray them on yourself. I did my Evo and my girl’s turbo Forester last year in a friend’s shop with his spray wands and really got the underside, inner doors, and drains, very well.
Calling Carwell tomorrow. My car came up from Florida so it is basically spotless underneath despite its age, hopefully I can keep it this way.
Yea, I have my appointment set already. Better to call now rather than wait till fall. I called schmidts last year around october and couldnt get in till december. Im going with Carwell this year just off of all the recommendations- and its less expensive as well which makes it even better.
I was reading that thread a few weeks ago just to catch up on this topic now that were approaching that time of year. I wanted to bump it up again just to see if youd get your jimmies rustled again but refrained haha.
How early do I need so schedule for the carwell application?
Carwell starts taking appointments the end of August and I believe you can schedule it a few months in advance.
I would call and see what they have available.
If you need a time frame…you can go as late as 7:00 pm I think.
I called but I had to look at my scheduler because they said they could get me in that day, so ill call them this weekend. My only problem is that they still holes into the car? Does anyone else have an issue with that?
From what I recall, the holes are plugged once they finish and really looks almost like they were factory placed. At least that’s what I remember seeing on my Corolla last year. But it’s also possible they were there already and I just didn’t notice them before. I just booked an appointment for October 19th but they had openings this month as well, just didn’t want to go that early.
Automobile Manufacturers should be putting weep holes in areas to allow for drainage in between paneling from the start. Carwell adds holes to panels that don’t have weep holes so the can apply their coating and also promote better longevity of your panels. If they are plugged they clean them out as best they can.
Believe it or not most often panels rust from the inside out do to improper/poor/non-existent/plugged drain holes.
Any preventative measures are good measures. Doing nothing out of skepticism is probably not the best choice.
I got an appointment with carwell for 11/15, they are booked for about three wks
Anyone see the delta sonic sign on the 198 saying rust proofing lifetime warranty?
I think theres a warranty, but you have do get it oiled on a annual/semi annual basis. I ended up not getting the rustproofing, ended up just getting the unlimited car washes instead. Hopefully thats enough to prevent (most) rust.
Hmm, I might get this for the truck…
Just had my Corolla and Passat done last weekend.