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#580408 09/22/20 04:53 PM
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Sidelock
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On one of the recent threads, one of our brothers from across the pond noted he uses 3 in 1 oil in his guns as it was a fine high quality oil. I have always thought 3 in 1 was one of those oils that my grandparents and parents always had under the sink as a use for whatever oil, but I never realized this was a quality oil that could be used in firearms. Does anyone else use it and have any thoughts on the subject?

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I know Parker Bros recommended it

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The MSDS for the current version of 3 in 1 oil shows it's about 98% severely hydrotreated naphthenic oil and 2% naphtha.

Hydrotreating came along in the 1950's, it appears the product has evolved some since it's introduction.

Hydrotreating saturates the hydrocarbons with Hydrogen making the oil more stable.

Naphthenic oil is a better solvent than paraffinic oil, contains less wax to be removed during refinement, and can be more easily made to a low viscosity finished oil.

3 in 1 would appear to be a standard, conventional, light oil with a tad of solvent (petroleum naphtha aka lighter fluid).

It's a general purpose light oil. It does not say 'gun oil' on the label but it should be so close to any 'conventional' (vs. synthetic) product that is labeled 'gun oil' as to be indistinguishable in service.







"The price of good shotgunnery is constant practice" - Fred Kimble
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3 in 1 is pretty much all I have used on my guns for 50 years with no issues/problems in that time.

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I should mention, because someone else undoubtedly (rightly) will...

Being a naphthenic oil, 3 in 1 won't have a very high 'viscosity index'.

This means it will thicken at low temps and thin at high temps to a significant degree.

This is where the modern synthetic oils shine. They have very high VI and work ever so much better in cold weather.


"The price of good shotgunnery is constant practice" - Fred Kimble
RARiddell #580420 09/22/20 06:01 PM
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And also Singer sewing machine oil-- 3 in 1 is a standard yet today, like Hoppe's No. 9-- RWTF


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NyOil II all day long. Regular NyOil mineral oil is extremely good too, but its a highly refined mineral (dino) oil, NyOil II is a synthetic.

3&1 was rarely ever recommended for sewing machines, typewriters or clocks. NyOil, either one, is good for all of those applications.

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What Dustin said.

I cant help but notice that nobody here ever asks if they should run straight, non detergent 30W turn of the century vintage oil in their modern 2 stroke engines. Or, straight non detergent 30 weight oil in their new, twin turbo pickup engine. Just mix it up like they used to do when Grandpa was a little kid. A lot of engineering time has been spent in the last 125 years improving sheer, anti corrosion, EP qualities, improvements in ester chain length and strength, etc, etc, etc, and we still have guys that want to use 3 in 1 and Vaseline.

Ick.

Best,
Ted

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When I worked for Chrysler Trenton Plant the best oil we ever used as an additive was sperm whale oil. For many years it was consider the best gun oil. Today it is not legal.

bill

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