Johnfromphilly
TJ Enthusiast
So you use POR-15 on the underside and FF on the frame?I'm in Central NJ when i bought my TJ last year it has some scaling on the inside of the frame but only the drivers side around the skid plate attachments and near the rear control arm, I cleaned it out with an air compressor/magnet, drilled holes right behind the rear control arm, plug up the holes on top of the control arms i the front and rear and I fluid film the shit out of the inside once every 3 months or so. I periodically run a magnet in there to check and I haven't noticed any more scaling since I've done that almost a year ago.
In a couple months when its warm out im going to do my yearly cleaning of the underbody/frame ill check what's up.
I cleaned and POR-15 everything under the car (control arms/ skid plates, Axles, etc) except the frame which has almost no rust on it whatsoever.
We are in the same geographic area as I am right over the river from Trenton.