Title says it all, I think I might have slight rust issues but I don't want it to continue obviously and I would like to stop the rust as soon as possible. To do this the right way, and the way that stop my frame or any other vital parts from ever rusting again, do I have to disassemble the whole truck? Should I remove the bed and get at it through there? from my understanding, I need to knock off any loose rust, apply a rust converter/isolator, then prime the frame and paint the frame. Would doing this with the truck assembled leave me with areas where I can't get to or accurately inspect? Thanks for all the help.

 

The cheapest way thats effective still i can think of?? Pull the bed off at least. Clean off the rust with wire wheel or other method. Wash the dust away. Then you have some options

POR15 the frame then Paint
Rust Converter then Rust Encapsulator

Then coat the frame in Fluid Film. (Lanolin wax/oil)

the fluid film isn't a forever defense but a good defense for sure. all that should be well under 200 bucks

This is all purely subjective btw. But the bed is easy to pull and exposes the majority of the truck rather well. Outside of moving to a salt free desert youre stuck with the issue for life. Doesnt mean it can't be prevented but tough cookies you know? Id also look into an underbody washer attachment. I drive my cars through auto car washes with them (EEH GAD NO THE PAINT!? BUT what about the PAINT SWIRLS. idgaf if its protected and a daily. Js)

 

Ah ok, thanks. We very rarely salt the roads here in Brenham tx but rust can still get worse without salt right? I want to make this truck last as long as possible and money isn't a terrible issue. Basically just waiting for Ford Mavericks to Become available at MSRP.

 

Rust is from oxygen contacting any metal, so very hard to prevent rust on a metal vehicle
Water is H2O so has oxygen as part of it, so promotes rusting
Salt with water causes even faster rusting

Painting metal means oxygen can't touch it, so no rusting

Painting over rust will slow it down, but ONLY slow it down, rusted area needs to be cleaned of any rust before painting/sealing
There are chemicals treatments like Naval Jelly, that convert rust to an inert material so stop it, and the metal can then be painted over

Primer and paint
Primer can stick to metal quite well, but it is not a good sealer, barrier from oxygen
Paint can not stick to metal very well but is a good sealer, but paint can stick to Primer
This is why you should primer a metal surface first, and THEN paint it

Some products offer a primer/paint in one application........................sounds hoaky to me, lol
But to each his own

And yes, Rust is the same reaction as fire, Oxidation, but it would take a few decades to roast a marshmallow over a rusting metal part, lol
The metal IS actually "burning up", so just like wood in a fire there is very little left of the metal if its left to rust

 

POR15 and Fluid Film are the most cost effective methods I know of.

A popular one that was TERRIBLE was known as Ziebart. If you were anywhere near the salt belt this nifty black coating trapped moisture underneath it and accelerated rusting to within 10 years for bullet hole frames XD they still sell this crap. They also sell rubberized undercoatings people swear by... Stay away from it. POR15 and Fluid film are definitely the ways to go.

That said are you sure you're even rusted? My definition might be a bit different from yours being bad here it has to have multiple holes lmao. If the resources are available to you, you can pull the bed and cab engine and trans off and send the rolling frame to a painter or buy a frame to drop off and pick up at the painters then swap your truck to it. More common than you might think since rangers can be had so cheap and share a decades worth of parts.