birdiemc
Well-Known Member
I had to replace the catalytic converter on the wife's truck so I decided to cut off a piece of exhaust pipe and open it up to test all the cleaning solvents I have on hand.
This one I scraped away some of the carbon with a screwdriver just to see how fouled it was, note the pile
Lineup of cleaning solvents
After about a 15 minute soak
I rubbed lightly with a patch to clean here's the results, in order I tested not quality of performance.
1. Hoppes Elite- while rubbing the carbon feels gummy under the patch, did not remove carbon down to bare metal
2. Otis Firearm Surface Prep - This removed carbon with light rubbing down to bare metal, left behind oily residue, note smear marks in the carbon.
3. Carb Cleaner- Clean and dry, down to bare metal
4. "Control" - this place had no solvent applied, carbon required heavier rubbing with patch but came clean to bare metal
Continued...
This one I scraped away some of the carbon with a screwdriver just to see how fouled it was, note the pile
Lineup of cleaning solvents
After about a 15 minute soak
I rubbed lightly with a patch to clean here's the results, in order I tested not quality of performance.
1. Hoppes Elite- while rubbing the carbon feels gummy under the patch, did not remove carbon down to bare metal
2. Otis Firearm Surface Prep - This removed carbon with light rubbing down to bare metal, left behind oily residue, note smear marks in the carbon.
3. Carb Cleaner- Clean and dry, down to bare metal
4. "Control" - this place had no solvent applied, carbon required heavier rubbing with patch but came clean to bare metal
Continued...