Corrosion protection.

I've tried products similar to the armour seal , like rust check rubberized undercoating and they didn't really hold up for me.

I just spray KROWN T-40 on everything now and although it's a bit messy it does seem to help.

That black-max looks interesting though, I'd like to hear more.

 

I've been considering sand basting the underside (frame rails and cross members) of my steel steps and RGNs and instead of paint using spray-on truck bed liner.

 

Better off using POR-15.. That stuff is suppose to be very good, and durable.

 

Line-X is the greatest ever JDP

 

What is your recommendations, based on your experience?

 

You must still prime and paint first. Bed liner wont bond to bare metal.

 

Por 15 needs to be painted after it drys. UV rays from sun light break down por15 very fast. Under a trailer it would last longer because its not in direct sunlight but it should still be painted.

 

Well then its a good thing that POR-15 has a complete line of paints to go over their main product.

I've been interested in their Hardnose line of aircraft paints. I've used the original POR-15, as well as their chassis top coat, and I think its done well enough. It even helps hold together the last bits of a 40 year old british car.