Favored Synthetic Gun Oil?

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Mobil 1 here, too. 5w-40. It is one of the very best synthetic oils with great anti-wear and heat-resistant additives. I've also had very good luck with motorcycle lubricants from Amsoil and Repsol.

I suggest anyone who is really interested to check out

www.bobistheoilguy.com

Many petroleum chemists post on there and there is a ton of scientific data to support what oil is good for what application.

And whoever said it isn't a true synthetic on the first page is incorrect, thanks for making a detailed post about it, Murphy4570

Funny enough, I find the dedicated gun oils to be overpriced and under performing.
 
Rotella Synthetic. I had some left over from an oil change on my bike.
PJ-1 chain lube works as a slide grease, flows in easily and stays put. It's rubbish as a chain lube. Flings everywhere, not so much on a semi-auto.
 
Those that use auto syn. oil , how do you choose the weight ? Do you change form thicker weight in the summer to lighter weight in the winter ?
 
If Mobil 1 is good enough for the U.S. Marine Shooting Team, I'd guess offhand it's good enough for me. As far as the weight, they never said, but I'm guessing 5W/30.
 
Mobil 1, specifically the primarily Group IV grades. For AR's I like 5W30.

Those that use auto syn. oil , how do you choose the weight ? Do you change form thicker weight in the summer to lighter weight in the winter ?
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No, that shouldn't be necessary. One of the good things about PAO based synthetics is their very wide operating temperature range. Of course, I'm running Mobil 1 5W30, not 20W50 or something, so if you went super-heavy in the summer you might want to back it off a little in the winter.

If I were going to Maine/Antarctica/Siberia in the winter, I might think about going thinner, but 5W30 is certainly fine for temperate winter use.
 
Weight shouldn't be much of an issue for guns. However, weight is very important for internal combustion engines, and different weights will have wildly different additives because they're designed for different functioning engines even though the brand is the same. For instance the oils marketed for engines with 80,000+ miles typically have a lot of esters in them to make rubber swell since older engines typically have old gaskets and seals. I went with a slightly heavier weight because that specific weight has, from what I can tell, much better anti-wear additives than the others. The weight of the oil was coincidence. It has worked great.
 
Mobil One Synthetic for my handguns. Breakfree CLP for my AR, Lubriplate (I don't know if it is synthetic) for my M1. Once I am out of that, I will use Mobil one grease for my old war horse.
 
red rick said:
Those that use auto syn. oil , how do you choose the weight ? Do you change form thicker weight in the summer to lighter weight in the winter ?
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I'm guessing most of us just use whatever is left over after an oil change in our cars. That is why I use 5w20. That's what my car takes. I don't think guns care too much about the differences between car oil weights like a car engine does. You can just use whatever your engine takes.
 
Glad to see others posting Mobil 1 as their #1 synthetic. I just started using it when I found some stuff I had left over from my street rod, 15 weight I think. Maybe I should add some Prolong to the mix as well.
 
Yeh what Red Cent? Sneak into the house? I'm sure I'd appreciate what you said, if I understood it lol.
 
Yeh what Red Cent? Sneak into the house? I'm sure I'd appreciate what you said, if I understood it lo
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That was a profound statement is there ever was one. What good it contributed is totally unknown. Do we have a meds problem or what?
 
I use Break-Free Sports Lube--I have a 4 oz. plastic bottle I think about 20 years old ?
Still half full.
Rust protection in the safe I use Barricade rust stop.
 
About 10 years ago, I was between full time jobs. Based on my educational experience, industry experience, and technical background I was able to do consulting work for a company that made synthetic lubricants. I got to see lots of data from testing (mostly automotive focused). From what I saw, it was very clear that synthetics (as well as addatives) reduced the wear relative to the conventioal lubricants. All I put in my cars now are synthetic lubricants as I drive a car till they drop. Based on that, I would expect synthetics to be better for firarms as well. Whether you will shoot enough to notice the benefit is debatable. Also, if youy buy and sell firearms frequently, I doubt it matters much. As far as synthetics go, I use John Jardines greese that comes in a syringe tube. Why? Well, I know the man and he is very detail oriented on things. He did work with scientists to make this orange colored greese and it does smell differently. Other synthetucs may be just as good. I just don't know. Typically I will use either remoil or breakfree clp to clean. Then I put on Jardine's grease. If out in the field and I need some more lubricant, I typicall use breakfree. Even though I have one pistol with around 11,000 rounds through it, I still think this is a low round count.
 
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