Smyth Busters: Is It Bad To Mix Gun Oils?

Published on March 29, 2022
Duration: 4:20

This guide, presented by Brownells' Smyth Busters, addresses the common myth about mixing gun oils. Experts Stephen and Caleb explain that while intentional mixing can sometimes be used for specific cleaning tasks (like thinning cosmoline), it's generally not recommended for regular firearm operation. Different oil bases can react, leading to gumming and malfunctions. The key takeaway is to thoroughly clean a firearm before applying a new type of gun oil to avoid potential issues.

Quick Summary

Mixing different gun oils is generally not recommended due to potential chemical reactions between varying base formulations, which can lead to gumming and firearm malfunctions. Experts advise thoroughly cleaning all old oil from a firearm before applying a new lubricant to ensure reliable operation.

Chapters

  1. 00:03Introduction: Smyth Busters
  2. 00:12The Myth: Don't Mix Gun Oils
  3. 00:30Gun Oil Brands & Bases
  4. 01:08Police Department Oil Test Story
  5. 01:48Mixed Oils Gummed Up Guns
  6. 02:04Intentional Mixing of Oils
  7. 02:33Oil Chemistry Discussion
  8. 03:10When Mixing Oils is Okay
  9. 03:31Warning: Avoid Mixing Gun Oils
  10. 03:59Conclusion & Viewer Engagement

Frequently Asked Questions

What is the main concern when mixing different gun oils?

The primary concern is that different gun oils have varying base formulations which can react negatively when mixed. This reaction can lead to the oil gumming up, causing your firearm to become sluggish or malfunction.

Can I mix synthetic and petroleum-based gun oils?

While the video's hosts admit they aren't chemists, they suggest that mixing different base types is generally not advisable. Incompatible bases can cause issues, and it's best practice to clean thoroughly before switching oil types.

Are there any situations where mixing gun oils is acceptable?

Yes, some gunsmiths intentionally mix oils, not for operational use, but to thin out very thick lubricants like cosmoline for easier cleaning and removal. However, this is a specific technique, not a general recommendation for firearm lubrication.

What should I do if I want to switch to a different gun oil?

The expert recommendation is to completely clean out the old gun oil from all firearm components before applying the new lubricant. This prevents potential chemical reactions and ensures optimal performance.

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