Best Penetrating Oil. This 5050 mix is the most effective inexpensive cheapest penetrating. 13 3 Schaeffer Manufacturing Co.
0190-011S Penetro 90 Best Penetrating Oil for Rust. 1 Liquid Wrench L134-4PK Penetrating Oil. These have a higher viscosity than the rest and dont ignite even with direct fire contact.
If you need to preserve steel parts with machines faces some WD40 and a plastic wrap will work nicely for years.
Halfords Shock and Unlock is pretty good as well. 1 Liquid Wrench L134-4PK Penetrating Oil. But among them i have picked some of the top rated brands with good customer satisfaction for you and i hope that this would be useful in your search for high quality penetrating oils. ATF and Acetone tested on a rusty screw bolt see what the results were of the Test.