Rust Removal Test
Thread Starter
Racer
Joined: Sep 2015
Posts: 275
Likes: 17
From: peachtree city ga
Rust Removal Test
For what it is worth:
I just completed an unscientific test on rusted railroad spikes. Only part of the spikes were submerged in the products. I allowed them all to soak for 25 hours in a non-environmentally controlled enclosed garage. Outside day temp was about 65 degrees. Night temp around 45 degrees.
Results:
1. Evapo Rust
2. Ospho
3. Kano Exrust
4. Bullfrog
5. Metal Rescue
I have some good pix. Note: Ospho and Kano are tied for second. Also, I used to use field-grade molasses as a rust cleaner. Bullfrog is the ONLY product you can use against gravity and hope it sticks for a while. It looks like molasses and has a slightly less thicker consistency than molasses. Hmm.
pix: https://drive.google.com/folderview?...mM&usp=sharing
I just completed an unscientific test on rusted railroad spikes. Only part of the spikes were submerged in the products. I allowed them all to soak for 25 hours in a non-environmentally controlled enclosed garage. Outside day temp was about 65 degrees. Night temp around 45 degrees.
Results:
1. Evapo Rust
2. Ospho
3. Kano Exrust
4. Bullfrog
5. Metal Rescue
I have some good pix. Note: Ospho and Kano are tied for second. Also, I used to use field-grade molasses as a rust cleaner. Bullfrog is the ONLY product you can use against gravity and hope it sticks for a while. It looks like molasses and has a slightly less thicker consistency than molasses. Hmm.
pix: https://drive.google.com/folderview?...mM&usp=sharing
Administrator
Joined: Mar 2001
Posts: 367,701
Likes: 24,672
From: In a parallel universe. Currently own 2014 Stingray Coupe.
C7 of the Year - Modified Finalist 2021
MO Events Coordinator
St. Jude Co-Organizer
St. Jude Donor '03 thru '25
NCM Sinkhole Donor
CI 5, 8 & 11 Veteran
Maybe it's just me, but from the pics it looks like the spike treated with Bullfrog was the cleanest.
Le Mans Master
Joined: May 2006
Posts: 6,774
Likes: 361
From: Midland TX
I got frustrated and removed all my railroad spikes from my C5 years ago. 
I have had pretty good luck with Griot's Rust Remover. I had a garbage disposal where the impellers were rusted so bad they would not move. I tried everything I had with no luck. Finally sprayed the Griot's in and left it overnight, next day all the rust was gone.
I have had pretty good luck with Griot's Rust Remover. I had a garbage disposal where the impellers were rusted so bad they would not move. I tried everything I had with no luck. Finally sprayed the Griot's in and left it overnight, next day all the rust was gone.
Burning Brakes
Joined: Jul 2013
Posts: 1,008
Likes: 57
From: Kensington MD
Corvette Stories
The Best of Corvette for Corvette Enthusiasts
Corvette ZR1X Will Be Pacing the Indy 500, And Could Probably Race, Too!
Verdad Gallardo
Top 10 Corvettes Coming to Mecum Indy 2026!
Brett Foote
Top 10 C9 Corvette MUST-HAVES to Fix These C8 Generation Flaws!
Michael S. Palmer
10 Revolutionary 'Corvette Firsts' Most People Don't Know
Joe Kucinski
5 Reasons to Upgrade to an LS6-Powered Corvette; 5 Reasons to Stay LT2
Michael S. Palmer
2027 Corvette vs The World: Every C8 vs Its Closest Competitor
Joe Kucinski
10 Most Common Corvette Problems of the Last 20 Years!
Joe Kucinski
5 MOST and 5 LEAST Popular Corvette Model Years in History!
Joe Kucinski
2027 Corvette Buyer's Guide: Everything You Need to Know!
Joe Kucinski
Thread Starter
Racer
Joined: Sep 2015
Posts: 275
Likes: 17
From: peachtree city ga
In Response to Huesmann
1. I would hope what part of the spike is obvious, but yes, the top 1/3 was submerged in the products in the same timeframe.
2. I did this purely as an experiment and sharing the results. It was not meant to imply the vette is prone to rusting. I assume since most of us own vettes, we like to tinker with our cars and other projects. Practical applications range from nuts, bolts, saw blades, etc.
Thanx for the questions.
2. I did this purely as an experiment and sharing the results. It was not meant to imply the vette is prone to rusting. I assume since most of us own vettes, we like to tinker with our cars and other projects. Practical applications range from nuts, bolts, saw blades, etc.
Thanx for the questions.
Burning Brakes
Joined: Jul 2013
Posts: 1,008
Likes: 57
From: Kensington MD
My question was not if the Vette is prone to rusting, but if so, is there a part that is? I know there's not as much steel in the things as there is plastic, fiber, and aluminum, but the jacking rails are steel at least!
Safety Car
Joined: Feb 2001
Posts: 3,725
Likes: 53
From: Warrington Pa.
Cleaning brake rusted rotors, cleaning under ground locations, cleaning mechanical fasteners.
Drifting
Joined: Jun 2013
Posts: 1,955
Likes: 340
From: Shell Point (Crawfordville) Florida
These chemicals do not remove the rust (iron oxide) from the surface, they are "rust converters", and change it to iron phosphate, which is a chemically inert compound. These all contain phosphoric acid in their formulation. Some of the "rust converters" change ferric oxide into ferrous sulfate, which is also inert. The black coating you see on those spikes is a surface layer of iron phosphate as a result of the chemical reaction with the phosphoric acid in those different products. They stop rust, they don't prevent it, and they can be left as is or painted, that surface is like a primer and holds paint well.
Some people use coke, lemon juice, vinegar, toilet bowl rust and lime remover, oven cleaner - other acids to do the same thing, but they can also pit the surface of the metal.
Some people use coke, lemon juice, vinegar, toilet bowl rust and lime remover, oven cleaner - other acids to do the same thing, but they can also pit the surface of the metal.
Last edited by mrlmd; Feb 5, 2016 at 05:38 PM.