This 'Smyth Busters' episode from Brownells debunks the myth that mixing gun oils is always detrimental. While generally advised against to prevent potential malfunctions, the hosts explain that certain thin oils, like Rem Oil mixed with Break-Free, may not cause issues. They also share an anecdote where mixing new oil with uncleaned old oil led to gumming, slowing down firearms but not causing catastrophic failure. The discussion highlights that while practical experience suggests caution, the precise chemical interactions of mixed oils, especially synthetic and petroleum bases, are complex.
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