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Rust proofing the underbody of a BMW E38 728i 1998

12K views 7 replies 6 participants last post by  Simonrev 
#1 ·
Does anybody know a good place in munster ideally or other counties that are good at rust proofing the underbody for my BMW E38 728i 1998 and approximate costs.
thanks in advance
todds
 
#5 ·
One thing to note on this is that the car needs to be bone dry and simply spraying under-seal or Waxoyl onto the underside is a big no-no.

Bottom of car needs to be thoroughly cleaned and then dried off...any rust needs to be treated and then then protection can be applied.

Simply applying it to dirt and moisture is probably worse than not having it done at all!
 
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