Some of you may remember my ordeal with the floor on my 240d last summer.
After welding the new plates in and applying seam sealer, I painted it with Miracle Paint, a rust preventative coating similar to POR-15, but better. Then I did what everybody warned me against and used a spray undercoating.
"Human beings, who are almost unique in having the ability to learn from the experience of others, are also remarkable for their apparent disinclination to do so."
- -Douglas Adams
Now I'm pretty diligent with keeping my car clean through the winter, using a touchless car wash that also sprays the undercarriage. Well, after what was hopefully the last winter wash I decided to take a look underneath and see how my repairs were holding up.
- "Lets just take a gander here.....
- the next few days.
Now my potential solution. I've used this product before when installing my wheel well liner 2 years ago, and noticed that it has not been affected in the slightest by road salt. I contacted the company and they informed me they have a brush grade version sold as a roof repair/sealant called "Through the Roof", though they wouldn't say if it would withstand my proposed application. So I am performing an experiment to test both Through the Roof's and Miracle Paint's resistance to rust.
As visible in the lead picture I have three test pieces.
- small piece of untreated steel
- small piece coated in Miracle Paint
- larger piece, half of which is coated in MP, then about two thirds covered in Through the Roof, with the bottom third exposed steel
I have them in a small tub and will be applying a water and rock salt mixture every few days. I'll do updates periodically, and if anyone has suggestions of any kind please let me know.