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Affordable Gun Cleaning Solvent
and Gun Lubricating Oil

Summary Copyright December 10, 2008 by Robert Wayne Atkins, P.E.
All Rights Reserved.

For Fair Use and Educational Purposes Only.



ATF and Motor Oil ArmaLite conducted a series of extensive tests and they determined that Automatic Transmission Fluid (ATF) is a very good gun cleaner and lubricant. ATF does a very good job at removing carbon deposits and it also does an excellent job of protecting steel surfaces.

ArmaLite also recommends motor oil as a superior gun lubricant and rest inhibitor. Synthetic motor oil is best but regular motor oil also works well. After cleaning the bore with ATF, you could swab the inside of the gun barrel with 2 drops of motor oil on a clean gun cleaning patch in order to prevent future rust problems.

ArmaLite included the above information in a Technical Note that appeared on their web site at the following link:

http://www.armalite.com/library/techNotes/tnote64.htm

Unfortunately the above link is no longer active. Therefore the following information is a direct quote from the above link at the original ArmaLite web site and the following information is being provided for fair use and educational purposes only.



Technical Note 64
Alternate Cleaning and Lubrication Materials for Small Arms Background

ArmaLite officials conducting small arms maintenance training in an allied nation were advised that Military and Police officers often use common cooking oil as a small arms cleaner and lubricant. A 4 ounce bottle of cleaning material common in Europe or America could cost as much as a weeks income for a laborer in much of the rest of the world.

ArmaLite is concerned that improper cleaners and lubricants could threaten the performance of its rifles in critical moments. ArmaLite's staff has therefore conducted a preliminary study to identify inexpensive, effective small arms maintenance materials that are available worldwide.

Findings:

ArmaLite has consulted with Small Arms experts at Rock Island Arsenal and elsewhere, and has conducted preliminary evaluations of the materials they recommended:

Automatic Transmission Fluid (ATF) as a cleaner and light lubricant. ATF performs admirably as a carbon remover, and protects steel surfaces excellently ("Have you ever seen a transmission that's rusty inside?").

Twenty weight engine oil serves in an environment that is far more strenuous than normally found in small arms so it is normally quite successful. The Army authorities recommend synthetic oils such as Mobil 1. (In fact, one noted authority has used Mobil 1 as his personal firearm lubricant for over two decades.)

No safe copper remover formulation has yet been identified, but government tests reveal that copper removal provides no advantage in a standard military arm. It may serve a useful purpose in cleaning the bore of a rifle meant for extremely precise fire, such as a sniper rifle.

Recommendations:

Employ ATF as a small arms cleaning agent, and follow with 20 weight synthetic motor oil as a lubricant.

Until a commonly available alternate copper solvent is identified, employ a commonly available commercial copper solvent such as Hoppe's Number 9 on firearms intended for a high degree of accuracy.



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