Using motor oil on guns.

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Any product with the word 'gun' on it will cost more.
Motor oil is all we got for cleaning in the CF. No reason not to use it for lubing too. Just not in extreme cold or excessively dusty places.
Synthetic oil is too expensive.
 
Motor oil is perfectly fine. I use a 50/50 mixture of Mobil 1 and Marvel's Mystery Oil. Very slippery stuff. My AR and my 10/22 love it. I use some Tetra gun grease on the AR very sparingly on the cam pin and a tiny bead along the rails and on the charging handle. Then spritz over all with some Mobil 1 mix. I tend to run the AR pretty wet and the 10/22 less so. Grease will only be a gunk attractor if you don't clean it often. If you clean often, grease seems to keep the carbon stuff from sticking. I clean my after every time I shoot it. Not sure if it's with reason or just an OCD.
 
Grease on an AR = no go.
I've been using grease on my AR since I got it , it's lite brake in grease (NAPA Lubriplate 105) I put a dab on the bolt and use a small paintbrush to get it in everywhere it need to be , I also use it on my bolt guns , a dab on the bolt lugs , work the action and wipe off, Great for long term storage too, it has little smell and wont varnish , and I've been using the same tube for over 15 years ,
 
Totally get it for automotive application (drive "sports cars" - the $200 dealer oil change is an expense that I don't skimp on), but does it matter for firearm uses?
My new car specifies synthetic 0-20. I can change the oil and filter for around $35 at the most using Mobil 1 and an OEM filter. I hope they are doing a bunch of extra stuff at the same time to warrant the extra $165.

My favorite firearm lube is 50% ATF, 25% each Mobil 1 synthetic and STP. I mixed up a quart about 20 years ago on the advice of an old National Guard armorer I used to shoot with. I'm still working on using up the last few ounces of that quart today. It has a great combination of heat resistance, slipperiness and cling.

I wouldn't hesitate to use straight automotive lubricants on guns (or most other mechanical devices) if needed. Few lubricant applications have been as extensively researched as automotive products.
 
Castrol 20-50 on BSAs & Triumphs for decades. Gotta be good for guns, too.
Caution: watch for dark spots on the floors.

Any of the plastic gun makers say not to use automotive products on their wares?
 
Wink Gun Lube

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I only use Sperm Whale Oil

Sperm Whale Oil was used in the first automatic transmissions, then they developed ATF which performed even better.

With that said I still use Sperm Whale Oil for some applications, supposedly it never oxidizes. Still have a can almost full that I bought from Brownell's years ago when it was still legal.
 
My favorite firearm lube is 50% ATF, 25% each Mobil 1 synthetic and STP. I mixed up a quart about 20 years ago on the advice of an old National Guard armorer I used to shoot with. I'm still working on using up the last few ounces of that quart today. It has a great combination of heat resistance, slipperiness and cling.

I believe this is the same mix that the Marine Shooting Team used, do not know is they still do tho.
 
I'm a big fan of Mobil 1 V Twin. As it's formulated for motorcycles it has a stronger detergent and anti corrosion additives package than the automobile version.
I've used on all my firearms for decades. For NE USA it works very well.
I'm especially happy with its performance in ARs. Stays wet longer than any other lube I've tried. It keeps carbon buildup soft and easy to clean off. Even after a 500 round course with no re lubeing the BCG was wet and easy to clean.
It seems to resist burning off very well.
I've often wondered if Mobil 1 for Diesel engines might be better in the Anti corrosion & detergentcy area
 
The two highest film strength lubricants availble (those that will do the most to reduce wear on sliding surfaces) are castor oil and sperm oil. The castor oilhas the drawback of cluping up when it cools down after heating, but it can withstand high heat and high pressures better than any commonly available oil. Sperm oil, well, I think it may be just a touch hard to find...

Originally, Automatic Transmission Fluid contained sperm oil, but by the 1950's, it was being phased out and replaced with engineered synthetic replacements. ATF is an excellent lubricant, it doesn't break down under high pressure, and it can withstand high temperatures. Its biggest drawbacks are its low viscosity and low polar attraction - it doesn't stick well to metal. Castor oil used to be used in race cars and motorcycles because of its high film strength - excellent lubricity at low viscosity , and its heat resistance. Unfortunately, you had to drain it before it cooled down or you would have to flush out the engine because castor oil clots up after it has been heated. Castrol Motor Oil actually had one line that was castor bean oil.

Synthetic oils of the proper viscosity are excellent for use on firearms, and do every bit as good a job as any of the high-priced "gun branded" products.
 
mnhntr said:
Not to disrespect anyone on here who is what I call, overly educated, but I do not need a degree in petroleum engineering. It is common sense that a lubricant made for high heat applications such as gasoline engines would work in other high heat applications such as firearms. Since the object is to lubricate and reduce wear it is safe to assume they are interchangeable to a degree. I would venture to say that because there is a lot more money put into researching motor oil than gun oil it is probably a better product.

Not to disrespect anyone on here who is what I call under-educated and has little common sense, but it would appear that you need a degree in something. Does your common sense also tell you that a lubricant made for high heat applications such as gasoline engines would also work in other high heat applications like transmissions and gearboxes? You must save a TON of money not having to buy different oils for your transmissions, differentials, boat outdrives, and 2-stroke outboards. Since the object is to lubricate and reduce wear, I'm sure that you have no problem interchanging them.

I would venture to say that since there is a lot more money put into researching motor oil that it is probably a better product for motors.

On the other hand, the closest approximation in a motor to a firearms scenario (highly loaded lugs in sliding contact in a gun, as opposed to pressurized bearings with no metal-to-metal contact in a car) is probably best represented by the older flat tappet cam lifters in automobile engines. It's very common knowledge that the ZDDP content of motor oils has been significantly reduced (interferes with oxygen sensors, don't need it with modern roller lifters and overhead cam followers) to the point that older engines can be damaged running modern motor oils and require a ZDDP additive.

http://www.hotrod.com/techarticles/engine/flat_tappet_cam_tech/

but the latest API SM and GF-4 specs have reduced ZDDP content to such an extent that the new oils may not provide adequate protection for older, flat-tappet-equipped vehicles running nonstock, performance cams and valve trains. And it will only get worse; projected future oil spec revisions will likely reduce ZDDP content even more.

Your call, run what you want. Nobody here is going to characterize the wear on their guns, so your adversity to education will serve you well!
 
Totally get it for automotive application (drive "sports cars" - the $200 dealer oil change is an expense that I don't skimp on), but does it matter for firearm uses?
Firearms do work reliably for longer if you use high quality lubricants. I use Mobil 1 5W30 EP on my AR and it works better than any gun-marketed lubricant I've ever tried. Thicker and more persistent film stays put better, lubricates better than thin gun oils like Rem Oil, keeps carbon dissolved better, and stays wet longer between cleanings.

Those petroleum engineers starting at $100K-$150K out of college who specify different compounds and additives to tailor the oils for specific uses have no idea what they're doing.
As far as I know, there are no oils on the market that are refined specifically for guns. Gun oil is mixed from the same base stocks as other types of lubricants are, with off-the-shelf additive packs, and are little different from non-gun oils intended to work in similar temperature ranges. I challenge you to compare the physical and lubricative specs of, say, Rem Oil to a Group IV based synthetic 5W30 motor oil. Rem Oil or CLP are excellent as a thin corrosion protective film on a gun's exterior, which is what I use Rem Oil for, but as an internal lubricant it is not as good as synthetic 5W30.

As to ZDDP content, that is a valid concern (flat tappet to cam is actually a very good analogue) which is one reason I use EP rather than regular Mobil 1, and race oils would undoubtedly work great. I don't think you can find Rotella or Delvac in the appropriate viscosity ranges. (And what is the ZDDP percentage of Rem Oil?)
 
Nothing like a good oil argument! Almost as good as caliber wars.

benezra said:
Rem Oil or CLP are excellent as a thin corrosion protective film on a gun's exterior, which is what I use Rem Oil for, but as an internal lubricant it is not as good as synthetic 5W30.

Actually, Rem Oil or CLP are excellent as a thin corrosion protective film on a gun's exterior, and also far surpass synthetic 5W30 as an internal lubricant.

(Notice that I cleverly provided an equal amount of justification for my statement as you did for yours. One of us is possibly correct!)
 
Any one familiar with the product Dillon sells as "Snake Oil"? I think they claim it is medical instrument oil. Anyone know what it really is and how well it works?
 
Amazing, I am subscribed to 6 gun boards and certainly the lubrication and caliber wars occupy a great bit of their total posts. If I had a nickle for each post on lubrication, I'd surely have a more comfortable retirement than I do now, but lest you think I'm criticizing all this info, be advised that I assiduously read each and every one!

Hoppes 9 for the bore and Ballistol for the rest works for me assuming that I tend to them after each session.
 
Sperm Whale Oil was used in the first automatic transmissions, then they developed ATF which performed even better.

With that said I still use Sperm Whale Oil for some applications, supposedly it never oxidizes. Still have a can almost full that I bought from Brownell's years ago when it was still legal.
I'll bet you could turn a nice profit indeed if you could find a high end watchmaker/repairman to sell it to. Somebody once told that for the high precision tiny, soft gears in very expensive watches that there is no better lubricant even today.
 
I use motor oil on my guns and gun oil in my cars.

Those petroleum engineers starting at $100K-$150K out of college who specify different compounds and additives to tailor the oils for specific uses have no idea what they're doing.
That's an awful lot of money to be payin' a feller right out of school, don't you think? But me bein' uneducated and all, I'm thinkin' the lubrication requirements of a firearm are but a fraction of those imposed by a modern internal combustion engine, so you're good to go. But I'm not so sure about puttin' gun oil in your car engine.
 
That's an awful lot of money to be payin' a feller right out of school, don't you think? But me bein' uneducated and all, I'm thinkin' the lubrication requirements of a firearm are but a fraction of those imposed by a modern internal combustion engine, so you're good to go. But I'm not so sure about puttin' gun oil in your car engine.

An engine kinda sorta has an oil pan filled with a whole bunch of oil, a pump to circulate that oil to where it is needed constantly, and a filter through which said oil is continually passed, even though it is a (mostly) closed system. What part of that is applicable to firearms?
 
An engine kinda sorta has an oil pan filled with a whole bunch of oil, a pump to circulate that oil to where it is needed constantly, and a filter through which said oil is continually passed, even though it is a (mostly) closed system

That's what he was sayin wasnt he?
 
This has become one of the most enjoyable treads I have read in a while.
I'd have to agree, if "threads" is what you meant:neener:

I'm still flabbergasted by the Sperm Whale lube mention. My little infant mind wants to joke about it, but in fear of drawing a rebuke from the mods, I shall refrain:)
 
Well the part about sperm whales being ground up and used in automatic transmissions was certainly interesting.

I have a buddy who has an MSE focused on Tribology, I think he just uses a decent gun lube and calls it good. I may not have his credentials, but I have run Mobil 1 in an AR some, and couldn't tell any difference when I switched to SLIP2000... I reckon I'll switch back when the slip runs out given that Mobil 1 is an order of magnitude cheaper. If my guns suffer premature wear and give out at 60k rounds instead of 40k rounds, I'll just buy new guns.
 
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