Pennzoil Ultra cleans, chemically deactivates

[modularv8]

corrosion off aluminum. I recently bought a brand new 4-stroke model engine that had been in storage for about 25 years. The engine has never been fueled but the exterior of the aluminum alloy engine case had light corrosion; the gentleman I bought from was from a northern state. Anyway, I popped open the valve cover and put a little PU on rocker arms and down the push-rod tubes, some spilled onto the case. I wrapped it up in plastic and put it away. Meanwhile, I did alot research on how to safely clean off corrosion on aluminum and finally decided it was going to need to be bead blasted. Fast forward a week to today, I took it out to get it ready for cleaning and began wiping off the excess oil on the case. When I noticed the corrosion that was marring the finish came right off with each wipe, leaving a clean metallic appearance.

I hope this story/discovery will help someone. I realize this ability to remove corrosion may not be unique to PU, just a property of motor oil but I have never heard of this before.

Anyone have similar experience or knowledge about this?

 

[NHGUY]

Good stuff,and Wal Mart drops it..

 

[ChemicallyChargd]

I think the oil just loosened up deposits that appeared as corrosion at a glance. Aluminum pits more than it corroded and oil won't fix pitting no matter what's in it. I'm not saying you don't know why compression looks like but there are many look allows an I've never heard a complaint where corrosion was proffered to a look alike. I'd say it's a lucky break on the wallet.
- srv

 

[ChemicallyChargd]

Don't know wut corrosion looks like.* [censored] spell corrector changes wut I type sory.
-srv

 

[Donald]

Originally Posted By: ChemicallyChargd
I think the oil just loosened up deposits that appeared as corrosion at a glance. Aluminum pits more than it corroded and oil won't fix pitting no matter what's in it. I'm not saying you don't know why compression looks like but there are many look allows an I've never heard a complaint where corrosion was proffered to a look alike. I'd say it's a lucky break on the wallet.
- srv


+1 Its the same as when you spray on WD-40 on something rusty. You remove the iron oxide and dirt, but the actual rust stays. But if it helped your aluminum case great!

 

[NMBurb02]

Originally Posted By: Donald
Originally Posted By: ChemicallyChargd
I think the oil just loosened up deposits that appeared as corrosion at a glance. Aluminum pits more than it corroded and oil won't fix pitting no matter what's in it. I'm not saying you don't know why compression looks like but there are many look allows an I've never heard a complaint where corrosion was proffered to a look alike. I'd say it's a lucky break on the wallet.
- srv


+1 Its the same as when you spray on WD-40 on something rusty. You remove the iron oxide and dirt, but the actual rust stays. But if it helped your aluminum case great!

How does the rust (iron oxide) stay when you stated that the WD-40 removes the iron oxide (rust)? It may not prevent the surface from further oxidizing, but if the rust is gone then the rust is gone. Same thing would happen if the rust was removed with a media blast.

 

[volk06]

Originally Posted By: ChemicallyChargd
Don't know wut corrosion looks like.* [censored] spell corrector changes wut I type sory.
-srv


The spell corrector isn't doing a very good job anyway.....

 

[JHZR2]

So youre implying that it dissolves Al2O3?

 

[Kruse]

Originally Posted By: NHGUY
Good stuff,and Wal Mart drops it..


Then SOPUS obviously needs to educate the general public better. Unlike a truck stop that has 10 year old oil, WM only keeps stuff on the shelf that sells.

 

[simple_gifts]

Originally Posted By: JHZR2
So youre implying that it dissolves Al2O3?


Haha. To think we used all that electricity for nothin'

 

[buster]

Interesting. I'm not a chemist so i have no idea.