- Thread starter
- #41
It's not a hard or rubberized undercoating or tar - it's made of lanolin and really more like spraying dish soap.
http://www.fluid-film.com/automotive-applications/
Admittedly this is the first application for me. But I wash religiously during the winter and even with the last two being pretty mild for Chicago (minimal snow, ice, and salt usage) I'm still seeing rust starting to form particularly on welds along the frame, diff, etc. I am curious as to whether it's best to still wash the undercarriage regularly once applied or whether it's best to leave it alone and let the coating do its job.
I personally would avoid the tar-like or rubberized coatings. They will temporarily stop new rust because they coat your body/frame/etc but as soon as moisture can get underneath they will promote rust by retaining moisture. In addition, improperly applying those thick undercoatings can plug up drain holes and trap moisture.
http://www.fluid-film.com/automotive-applications/
Admittedly this is the first application for me. But I wash religiously during the winter and even with the last two being pretty mild for Chicago (minimal snow, ice, and salt usage) I'm still seeing rust starting to form particularly on welds along the frame, diff, etc. I am curious as to whether it's best to still wash the undercarriage regularly once applied or whether it's best to leave it alone and let the coating do its job.
I personally would avoid the tar-like or rubberized coatings. They will temporarily stop new rust because they coat your body/frame/etc but as soon as moisture can get underneath they will promote rust by retaining moisture. In addition, improperly applying those thick undercoatings can plug up drain holes and trap moisture.