is synthetic engine oil ok for gun lub??

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My dear old dad laughed when I showed him a brand new $10 bottle of super duper gun oil. He claimed a good quality engine oil was every bit as good as any premium gun oil and explained why (pressures, temperatures, RPM, and duration between oil changes in an automotive engine). As he had been a chemical engineer, , tanker (1935-1938, 1939-1944) and firearms instructor (1944-45) I trusted him. I've used synthetic motor oil on guns (and motorcycles and cars) for over twenty years now and it works great! Where applicable use grease but everywheres else use synthetic motor oil. One guy in the club is an instrument mechanic and he also uses synthetic motor oil. It works great!


That's right, Mobil 1 10w30 works great on ANY gun.
Unless you have 'some rearward attraction' to Gore...
 
Oil is a piss poor choice for firearms lube. Run grease, it doesn't drip, burn, or blow off the gun.

TDC

Grease is designed to hold lubricants in place keep the them in place. It is designed for very high speed and high temp environments, something Guns are NOT, unless running absolute full auto, even then high speed is not very high speed. The reason most bearings are sealed is to keep dirt out, not in. If you use grease remember that the grease will not only suspend the lubricating chemicals it will suspend dirt, brass bits that blow off the casing, and any debris it comes in contact with. Grease is likely the worst gun lubricant you can use and will cause premature wear if you use it on sliding surfaces, unless you replace it very often and keep your weapons very clean.

Advising to use grease is very bad advice.

Keep in mind when lubing a firearm less is more, and most firearms function just fine when run dry. Not suggesting they be run dry, just saying don't over do it. and of course Motor oil is fine, just fine.
 
I've posted this before, and I'll post it again every time this topic comes up. G96, I use it for lube, cleaning, everything, on all my firearms. I've never had an issue with corrosion or an issue with function (due to lack of lube) since using this product. Use whatever the hell you want as lube, but this is convenient, cheap, and designed specifically for the purpose. YMMV.

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Grease is designed to hold lubricants in place keep the them in place. It is designed for very high speed and high temp environments, something Guns are NOT, unless running absolute full auto, even then high speed is not very high speed. The reason most bearings are sealed is to keep dirt out, not in. If you use grease remember that the grease will not only suspend the lubricating chemicals it will suspend dirt, brass bits that blow off the casing, and any debris it comes in contact with. Grease is likely the worst gun lubricant you can use and will cause premature wear if you use it on sliding surfaces, unless you replace it very often and keep your weapons very clean.

Advising to use grease is very bad advice.

Keep in mind when lubing a firearm less is more, and most firearms function just fine when run dry. Not suggesting they be run dry, just saying don't over do it. and of course Motor oil is fine, just fine.

Your post is right full of fail. Grease is the choice of professionals everywhere. Regardless of the fact that SOME debris may be retained/suspended within the lubricant, grease unlike oil does not burn,blow, or drip off the firearm. As for less is more, you would be wrong again. I have yet to see an over lubricated firearm fail. I have however seen many under lubricated firearms fail. I'm not saying one should submerge their firearm in lube but, keeping your firearm lubricated is far more important than worrying about potential wear due to suspended debris:rolleyes: Grease is used in areas that see less than frequent service(speaking of non firearms use) and you're right, grease is often used in areas of high heat and high pressure. So where's the bad part in this equation??

TDC
 
Yes, but grease is even better on sliding surfaces. There's nothing magic about firearm-specific lubricants.
All true!


If you look in the Lube thread there are various alternatives. I personally use high temp wheel bearing grease... It makes parts feel like they are sliding on glass, it says where you put it, it does not freeze easily, it does not burn off, it does not cost $8 for 2oz-4oz. In fact, i generally pay ~$1.50 per 1lb tub at my local automotive store.

There are also many guys who use Automatic Transmission Fluid. ---I haven't tried this yet but do plan to.
 
Your post is right full of fail. Grease is the choice of professionals everywhere. Regardless of the fact that SOME debris may be retained/suspended within the lubricant, grease unlike oil does not burn,blow, or drip off the firearm. As for less is more, you would be wrong again. I have yet to see an over lubricated firearm fail. I have however seen many under lubricated firearms fail. I'm not saying one should submerge their firearm in lube but, keeping your firearm lubricated is far more important than worrying about potential wear due to suspended debris:rolleyes: Grease is used in areas that see less than frequent service(speaking of non firearms use) and you're right, grease is often used in areas of high heat and high pressure. So where's the bad part in this equation??

TDC

My mistake, I thought I said grease is designed for use in High Seed and High temp environments, not High heat and High pressure environments. Grease is ideal when two conditions are present, which rarely occurs on most firearms. The misconception about firearms is the amount of lubricant they need. they don't need near as much as many think, which is why oil is a good lubricant. I would use grease if I had to, but why do so when oil may be better? To say grease is the best, is not quite true, that's all.

When you have time, study that dirty grease when it comes out of your firearms. You won't be so fast to make the claims you make. It contains a lot more crud than you could imagine. Think about it.
 
Yes, dont drink the ATF, or any oil that isn't vegetable or animal based. You probably shouldn't lick your guns either. What's your point? Wd40 is a water displacement product, not a lubricant, it doesn't work as seasoning either.:p

Yah I thought someone would come up with a smart arse answer ;) My concern would be just having the #### on my hands when handling the BCG, breathing in vapors when firing my rifle etc. It's the same reason I try to limit my use of kroil for cleaning. but if you use it all the power to you. A friend of mine uses WD40 in his AR, when I handled his BCG it was dry as, but he keeps it clean. My one has gone 500 or so rounds without cleaning, just slip 2000 dumped on it, it's keeping the fouling in a liquid state. I'll clean it if and when it starts to choke. I remember my Saiga would run fine bone dry and adding oil and grease didn't seem to make a difference, must of been them sloppy tolerances.
 
I've posted this before, and I'll post it again every time this topic comes up. G96, I use it for lube, cleaning, everything, on all my firearms. I've never had an issue with corrosion or an issue with function (due to lack of lube) since using this product. Use whatever the hell you want as lube, but this is convenient, cheap, and designed specifically for the purpose. YMMV.

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x2 and it smells awesome. Open up your gun safe and it will smell like a bakery.
 
Nothing designed to do three things does them all well.

For cleaning, a specific carbon cutter, for copper; a copper remover, Mobil1 for lube, and a grease like cosmoline for preservation/storage.
 
I used to think graphite lube was the best. Then learning happened.
Use cleaners for cleaners, but lube is the best lube. Slip is the best I've used personally, it has a similar texture to most motor oils. I haven't done a side by side with it like I did with the Moly lube / CLP.

In a pinch I wouldn't hesitate for a second to use motor oil. I will for sure give the synthetic 10W a shot next time I have enough ammo to really heat things up. Ill just dunk my bcg in there and give 'er guts. Its just so much harder to do a similar comparison with 5 rd mags and paying the ammo bill.
 
Yes, but grease is even better on sliding surfaces. There's nothing magic about firearm-specific lubricants.


True but viscosity and what some lubricants do in various temperatures should be considered....

Up here if hunting with a semi in mid winter with -40C grease would be equivalent to mortar, binding everything solid and rendering your firearm completely useless. Add to it that snow "dust" while travelling on snowmobile will adhere to it further compounding the problem.

In this case a very light oil would be recommended. I usually leave my bolts DRY in this hunting situation or coat them with dry-lube which leaves a teflon film on it. Way better than oil as snow dust won't stick to it and much much better than grease as there is nothing in it that will thicken up.

Obviously once the trip is over the firearm is stripped and cleaned then lubed accordingly.

Regards,
 
Nothing designed to do three things does them all well.

I don't disagree with you. But for the amount that I shoot (more than some, less than some), and the cleaning regimen I use on my firearms (after every time I shoot), G96 works very well. As I said, I've been using it for years. In cold and rain, on course and with corrosive ammo. It's all that I use. I've had no corrosion, my bores all have a mirror shine and the bolts and parts that need to be lubed remain lubed until I clean them. It works for me.

Extremely high volume shooters, or those that don't clean their guns on a regular basis may need something better. That's fine. G96 works for me.
 
Holey faawwwwwk people I can't belive this is still going. This isn't rocket science for crying out loud. Ftr... I use Lukas 15w40 on the bolt and triflow on the hammer pivot in robams xcr... 4000 rounds between cleanings, through hellish abuse and yes i mean hellish from -34c to completely saturated and coated in mud from atv'ing in the rain with it on my back then sitting for 3 months rusting on the outside. Not one single
malfunction. Not a one.

I'd would love for someone to explain how any particular gun oil excedes in any aspect over ATF or engine oil without repeating what it says on the bottle, what someone else told you or cuz you say so. Let's hear an intelligent, and knowledgable arguement.

I wish I had kept track of all the "designed specifically for firearms" lubes that are rebottled garage door lubricants, lock lubricants, motor oil with food coloring and so on.

Don't forget that people want to make money, it's easy to take something like say 5w30 motor oil, add some blue dye and label it ### gun lube. People will buy it for $10 an oz, and itl work absolutely great, they'll tell 2 friends that tell 2 more.......There's a sucker born every minute.
 
Up here if hunting with a semi in mid winter with -40C grease would be equivalent to mortar, binding everything solid and rendering your firearm completely useless. Add to it that snow "dust" while travelling on snowmobile will adhere to it further compounding the problem.

In this case a very light oil would be recommended. I usually leave my bolts DRY in this hunting situation or coat them with dry-lube which leaves a teflon film on it. Way better than oil as snow dust won't stick to it and much much better than grease as there is nothing in it that will thicken up.

Obviously once the trip is over the firearm is stripped and cleaned then lubed accordingly.

Regards,

There are greases available that are suited to low temperature service.
 
We used to stand over the firing GPMG or a .50 cal and pour motor oil, straight from the can, onto the belt and over the gun. If it caught fire, it got beat out with a rag. Kept them running and lubed.

If it works for a few thousand rounds in an MG, it'll work for a couple of hundred in a semi hunting rifle.

Just for shiggles. I have a quart can of our original whale oil arctic gun lube. I don't think it's been issued in 30 years. Stuff acts like mineral oil at -40F. I haven't used 3 oz in 20 years.

No. You can't have any;)

Motor oil or ATF. Nobody here needs anything different or better.
 
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