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DIY video: Removing rust and paint the easy way


#1

Cleaning parts can be one of the biggest tasks (and headaches) in a restoration project, but Hagerty’s Davin Reckow is here to help in this week’s DIY video.


This is a companion discussion topic for the original entry at https://www.hagerty.com/articles-videos/articles/2018/06/08/diy-removing-rust-and-paint-the-easy-way

#2

I believe Muriatic acid attacks aluminum…so its not wise to use for cleaning mixed metal car parts and will really damage pot metal ( mazac for Brit cars) … phosphoric acid (the actual active ingredient in ‘coca cola’ that ‘armchair experts’ recommend for freeing stuck pistons etc) would be a far more sensible and practical solution…


#3

This cleaner IS Phosphoric, NOT Muriatic. I use milkhouse cleaners myself and it is, relatively, mild. I mix 1 gallon of cleaner to 3 1/2 gallons of water in a 5 gallon pail. The Phosphoric acid creates a zink compound and that is the film that needs to be removed. Muriatic doesn’t have a film and metal will begin to flash rust as soon as it is rinsed from the part.


#4

I’ve had real good success with zero rust and POR15 products. The only drawback with zero rust, that I’ve found is that it leaves a ferric oxide residue that can is annoying to remove. I’m new to rust removal, but have a couple of Jaguars from the 70’s that you can hear them rust. I’ve used POR15 on a trailer and had great results.


#5

POR15 is great at night only. It breaks down in daylight/ultraviolet .

Phosphoric acid turns iron oxide(rust) into iron phosphate/creates an iron phosphate coating on ferrous surfaces (steel) that primers love to stick to. One such product is OSPHO. I now use it inside rusty motorcycle gas tanks after I rattle nuts/washers/steel BB’s inside to remove the loose rust. Then I fill up the tank with 100% ospho. I just leave it for a couple of days and drain it out. Do a flush with some of this new terrible ethanol fuel or alcohol from rite aid.
Put a cap full of marble mystery oil each tankful. Works great. No more messing with any two part interior fuel tank coatings .

For exterior steel surfaces_I use Rust Destroyer red oxide primer over the iron phospate coating . It’s the one-two killer way to control rusting steel.
There is a similar product to ospho for aluminum alloys but, I can’t remember what it is.
Coca Cola is ok but I like it mixed with a good Jamacian Man rum like Mount Gay mmmm.


#6

2 thumbs up on the Mt Gay rum. However, I believe it is made in Barbados, not Jamaica