Synthetic Motor Oil as a Gun Oil

I have been using Mobile 1 Synthetic for case lube on my .50 BMG and .30-378 for a few years. For other firearms grease type applications to critical operating parts I have been using Ski-Doo type grease which is good to around -50 degrees compared to white lithium. In Alberta it is not uncommon to be hunting in the minus twenties with wind during the rut period.
 
One more for your consideration: Boeshield T-9
I use it on steel surfaces like tablesaw, bandsaw, jointer etc to protect from rust and to lubricate.

ht tps://boeshield.com/general-use/
 
...I once spilled diesel fuel down my pant leg and boots, and had two deer come within ten yards of me. I had a headache from the smell, but it didn't bother the deer at all.

BUSINESS OP! Put diesel oil in 4 oz. bottle, add dye and additional fragrance to mask original, create fancy label with catchy name and sell for $16.95. Bingo! Years ago there was a carbon-cutting bore cleaner sold for about that price which, according to some sources, was the same as GM Top Engine Cleaner (?) which you could buy a 16 oz. can of for $12.00. And that, no doubt, was just repackaged from some bog-standard industrial cleaner put up in 5- and 45- gallon containers.
 
It's been in use by the military for a very long time and recommended by Hickok45 you can't get a better recommendation that that

This ^^^ :) And in Europe, a version (presumably put up in sterile packaging) can be used medically as well. What's not to like? I use it to clean my pistols and revolvers, but not as a lube. Usually a drop of ATF works for that.
 
The best thing about diesel oil is that it's cheap, at least compared to Snake Oil. You can afford to fill a 45 gallon drum with it and soak parts or even compete guns for as long as it takes to soften rust and petrified grease. It may not be the best stuff made, but long-term immersion makes up for a lot, compared to dabbing on the expensive stuff and watching it run off. (Especially if the expensive stuff turns out to have been just diesel oil after all.) Better yet, you can buy diesel that already has red dye in it, and it's even a little cheaper.
 
Normally I would suggest ANY oil is better than NO OIL ... HOWEVER ... years ago took friends of mine from Ohio up moose hunting in Northern Saskatchewan ... it was COLD ... like REALLY REALLY COLD. First day out one of them had a close in shot of a MONSTER BULL ... he pulled trigger ... nothing happened .. he was devastated... claimed his rifle was always "well oiled and greased". I took the rifle (bolt action) and hosed all the action (specifically the bolt/firing pin) with gasoline from the slip tank in the 1/2 ton to remove ALL THE WELL INTENTIONED gun oil/grease that had totally solidified the firing pin within the bolt. The next day my local Canuck hunting buddies got a bull, cow and yearling calf between us ... my Win 88 .308 performed PERFECTLY despite the -30 conditions because all the Canucks were using well polished and NON oiled/greased guns.
What he said. Using any old oil is fine for southerners. When it’s REALLY cold no oil at all is the way to go. I know the trolls are going to freak because this goes against their expertise, but for people that do things rather then write things this is how you do it. When it’s warm you use lube but when it’s cold the less then twenty times that you cycle your bolt won’t wear your gun out. If it does you buy another gun. It’s a tool like a hammer.
Experts flame away.
 
By good fortune I have come to have some of the Lubriplate FMO-350-AW oil mentioned earlier in this thread. For me it is a lifetime supply. If anyone wants to try it let me know. I have placed an add in EE "other stuff".

....safe shooting
 
What he said. Using any old oil is fine for southerners. When it’s REALLY cold no oil at all is the way to go. I know the trolls are going to freak because this goes against their expertise, but for people that do things rather then write things this is how you do it. When it’s warm you use lube but when it’s cold the less then twenty times that you cycle your bolt won’t wear your gun out. If it does you buy another gun. It’s a tool like a hammer.
Experts flame away.

Agreed and that is why I prefer Mauser bolt actions for very cold conditions not only for the CRF but also for their bolts that can be disassembled completely for degreasing without tools. Take the bolt out, break it down, toss the parts in a pan of gasoline, brush them with a toothbrush and then re-assemble.
 
Full synthetic 10W/50 motorcycle engine/clutch oil which meets specification API SH (or higher)

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Is anyone using a synthetic motor oil as a general gun oil. I've heard of some people using Mobil1 as gun oil. I am just curious as to what viscosity is being used? Is it better to use a thicker oil that clings to parts or a thinner oil that flows better ? I can see pros and cons for both. Is anyone using Royal Purple oil or any other brand ?

I use Royal Purple for my Kennebec les pommes de terre frites...
What ring gap you running on the oil rings ???
G-96 is all one really needs, but opinions differ from day to day and region to region.
Rob
 
Personally, I use anything but ATF, since it has limited lubricity so the clutches don't slip and burn in the transmission. DEXTRON 6 is a bit more slippery though and I run it in my GM transfer case. Maybe an oil expert can enlighten me.
 
Didn't realize gun oil was that expensive.
I've got containers that I've had for years, and they're still half full.
Gun oil is formulated for my guns.
Engine oil and ATF is for my truck.

I've never had any rust problems.

But I guess any oil is better than no oil.

That part at the end.

Nothing special about so called Gun oil or Sewing Machine oil. Just light weight oils packaged for sale to particular consumers.

The proprietary blends amount to snake oil salesmen selling you THEIR version of what THEY think is a better mixture to use. Most of it isn't worse, but all of it costs more.
 
I am not surprised. I have people using it as bar and chain oil in chainsaws. Keeps me in business those jabroni's do!

I've been using used motor oil as a chain lube in chainsaws for fifty years. Still works fine; just as it always has. My father-in-law, and his in laws, who, amongst them, cut literally thoudands of truckloads of logs, also lubed with used motor oil. For guns, I use Dexron ATF a lot because that is what I used as a protectant after bluing and I always have a lot on hand. Inside the bore, I still used Hoppes#9 as I always have.
Two types of oils have to be warned against for use on gubs. One is WD40. It's a crappy lube, a crappy protectant, and will gum up any mechanism. The second is any vegatable oil. Olive oil, especially will glue any moving parts in place and is damn difficult to remove.
 
"I've been using used motor oil as a chain lube in chainsaws for fifty years. Still works fine; just as it always has. My father-in-law, and his in laws, who, amongst them, cut literally thousands of truckloads of logs, also lubed with used motor oil."
My father showed me this when I was a kid and I have been doing the same for Many years. We have always heated our homes with wood. I have replaced one bar in my life and a few chains. (Mostly because I am not the greatest at sharpening)
 
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