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FP-10 old vs. new?

Discussion in 'Gunsmithing and Repairs' started by Revolver Armorer, May 9, 2003.

  1. Revolver Armorer

    Revolver Armorer Well-Known Member

    I have found out how to tell old formula from new Mil-Spec FP-10. The old formula is slightly cloudy. This can absolutely be confirmed with a test tube. You can see the cloudiness under a direct light while applying FP-10. The new Mil-Spec formula is clear and slightly amber. Anyway, the last three bottles that I purchased are all clear and slightly amber. If you don't have a test tube, look under a high powered light. Apply a heavy drop on the barrel hood and you will see the difference (if you have any older stuff around). :)

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