Using motor oil as gun oil is a common topic of discussion among gun owners, often sparked by its readily available nature and seemingly lubricating properties. However, the question isn't simply whether it works, but whether it's the best or even a safe choice for your firearms. This article delves into the pros and cons, exploring why dedicated gun oils are generally preferred by experts and experienced shooters.
Why Some People Use Motor Oil for Guns
The appeal of using motor oil is straightforward: it's cheap, readily accessible at most auto parts stores, and undeniably lubricates moving parts. For someone in a pinch, or perhaps unfamiliar with gun maintenance, it might seem like a logical, albeit makeshift, solution.
The Downsides of Using Motor Oil as Gun Oil
While motor oil might seem like a viable substitute, several crucial drawbacks make it an unsuitable long-term lubricant for firearms:
1. Additives and Detergents
Modern motor oils contain a cocktail of additives and detergents designed to keep an engine clean and running smoothly. These additives, while beneficial for engines, can be detrimental to firearms. They can:
- Attract and retain dirt and grime: This can lead to increased fouling and potentially damage sensitive firearm components.
- Gum up mechanisms: The additives can thicken and solidify over time, hindering the smooth operation of the firearm's moving parts.
- Corrode metal parts: Certain additives can be corrosive to the metals used in firearms, leading to premature wear and tear.
2. Viscosity and Residue
Motor oil's viscosity, while suitable for engines under high pressure and temperature, is often too thick for the delicate mechanisms of a firearm. This can lead to:
- Increased friction: Thick oil resists movement, leading to increased wear and potential jams.
- Residue buildup: The thick oil can leave behind significant residue, which can interfere with the firearm's function and accuracy.
3. Lack of Protection Against Corrosion
While motor oil provides some lubrication, dedicated gun oils are formulated to offer superior protection against corrosion and rust, which are significant concerns for firearm longevity. Gun oils often include rust inhibitors that are absent in motor oil.
The Superiority of Dedicated Gun Oils
Gun oils are specifically formulated to meet the unique needs of firearms. They are typically thinner and less prone to gumming, ensuring smooth operation without leaving behind excessive residue. Furthermore, they contain corrosion inhibitors and other additives designed to protect the firearm from the elements and prevent premature wear.
Conclusion: Is Motor Oil a Suitable Substitute?
While a small amount of motor oil might offer temporary lubrication in an emergency, it's not a recommended practice. The long-term risks associated with using motor oil as gun oil far outweigh any perceived benefits. Investing in a dedicated gun oil is a small price to pay for ensuring the longevity, safety, and proper function of your firearm. Using the right lubricant is a critical aspect of responsible gun ownership. Proper firearm maintenance is essential for ensuring safe and reliable operation, and choosing the correct lubricants is a vital component of that process.
