govmule. First, 3000 mile oil change might be a recommendation, but it's NOT from the manufacturer. It's from the jiffy lubes of the world who want more money from you. Look at your owner's manual. It Probably says 5000-7500 miles.
Sure. And lots of OEM's recommend changing the filter every OTHER oil change. Are you such a cheapskate that you do that, too? The fact of the matter is the oil is consistently subject to shear forces, condensation build up, heat breakdown and fuel wash of the cylinders. Many newer hybrid cars use 0w30 oil. Pick a bottle up and shake it - it has nearly the same viscosity as water. Good luck getting every last drop out of that stuff. NOTHING gets held in suspension.
And for what it's worth, new oil actually DOESN'T protect better. There's actually a break in period where theoretically, if you changed your oil TOO OFTEN; e.g. every 500 miles, it would actually do MORE harm than good. It takes a certain amount of heat/friction for oil to actually become a better lubricant.
This is flat out false. From the day motor oil begins being heated, sheared, and contaminated, it degrades. Otherwise, Summit racing would sell "500 mile" motor oil to the real car guys. If you believe that, I have a bunch of well-used oil I'll sell you cheap - you can mix it with fresh
. I'll rescind this if you can back it up, but I can't turn up anything online that supports that school of thought.
Now, back to my responses on cleaning a gun. If you look at my first response, I mentioned using canned air (30 second job) after shooting to blow off any PHYSICAL frictions such as dirt, grit, etc... from the mechanical portions of the gun. Then a quick spray of lube on the mechanical parts and on the frame (Which I wipe off, just to get rid of finger prints and skin oils). As csmsss correctly mentioned, you can shoot 100 rounds through your gun, and it's not going to all of a sudden become "Less reliable" because there's carbon and lead in the barrel. Hell, you could shoot literally THOUSANDS of rounds and never clean the bore/barrel and it wouldn't affect the reliability of the gun. Even lead round nose bullets wouldn't stop it.
First, "physical frictions" are not always observable by the naked eye. Dump some glass beading media on the rails of your semi-auto and let me know how it performs. Second, the barrel is the last place I'd be worried about the build up - cylinder bind, stovepiping, and FTF/FTE situations would worry me far more and be much more likely. Additionally, all that heat and crap that fly out of a shell displace lubricant. If a few months go buy, who's to say rust or corrosion have not formed? Most of the innards of a gun are unfinished steel - usually needs some protection.
I do agree that grit and dirt in the mechanical portions of the gun could pose a slight possible problem. That is why I said I blow it out real quick. But if a person is putting gun in their pocket without a holster, then all bets are off. I will bet that the 100% immaculate clean gun, and the gun that's rarely cleaned, have the EXACT same percentage chance of malfunctioning because of some foreign matter from your pocket getting into it.
"Slight possible problem" is risky enough for me. I don't want to end up "slightly dead", so I clean up potential "slight problems". Insofar as your bet about the dirty gun performing the EXACT same way, with EXACTLY the same failure rates, explain to me why at every range I have been to, when someone has a malfunctioning, filthy rental and complains, the first thing any RO does is break it down and clean it, please. Additionally, to say that an already dirty gun is not more susceptible to a mechanical malfunction as opposed to a clean gun GETTING dirty is disingenuous - there is a dirt threshhold somewhere, and the dirty gun will simply hit it first.
If you don't believe me, pick up some notoriously finicky guns - Taurus PT-22s, Beretta Jetfire/950s, or a 10/22 with a dirty mag. A lot of those are super-reliable - WHEN CLEAN. Shoot them filthy. They WILL malfunction. Why chance it that that could happen when you need it not to?