Hi,
I live in NH where is snow and salt area in winter. I checked undercarriage every oil change and some warm day. Rust underneath is annoying. rust on suspension linkages, double wish bone and exhaust conjunction etc. Is there any solution to prevent rust for a few months during the winter? I bought rust inhibitor to spray. But after raining or certain amount of period of time, the rust came back. And when I sprayed rust inhibitor on rust part, I tried to avoid rubber bushings. I am not sure if rust inhibitor would corrode or damage rubber stuffs. So it is not efficient and effective while doing the spray work. I am going to buy Fluid film which is described as an utility player like loosening nuts , prevent rust~~~~. However, If it can loosen the nut, will it cause nuts coming off after I spray it on somewhere has nuts to connect the moving parts like rear linkages?
Or any solution to prevent rust?

Thanks

 

You might want to try the following sems products.

 

I use Fluid Film. Autozone carries them. Easy spray and it does an awesome job. Even after under carriage wash, the film is still on there. Best of all is you don't have to remove the rust first, although its recommended , but is a pita to sand every bit of it. Just spray and let it soak in.
And no it would not loosen bolts, silly guy.

 

Oh for those looking to protect their sub frames you might consider epoxy primer or better still is chrome plating the sub frame. Obviously this would be done off the car, as in a replacement sub frame. .02

 

Not sure if you have these products available where you are.Krown Rust Proofing and Rust Check are excellent products.

Being in Canada we also have some harsh Winters and the salt is very corrosive to the undercarriage of vehicles. Even though I do not use my car in the Winter,I will wash the undercarriage and then spray it with Rust Check products as part of storage preparation. After spraying it has a creeping effect to get in the seams etc and will drip a bit for about a day, after that it leaves a protective chemical that bonds to the car.

Here is some info for you.

Rust Check Application

 

Hi, Thanks guys. It is very useful information.
When you spray the undercarriage, Did you avoid rubber stuffs and nuts?

 

POR-15. A marine rust preventative.


http://www.por15.com/

 

interesting topic...sub for more info

 

I live in New England as well and after the historical snow season last year, the TL shows some a little rust on the undercarriage. I also see rust started to form on the weld area of the exhaust pipe..
Do these recommended rust prevention products work on the exhaust pipe??

 

Just saw this Fluid Film video. Gonna try this out on my car. It also seems to be applicable on exhaust pipes.

 

seems pretty easy to work with..$10 from advance auto