Rust prevention and lubing

[Sinjentic]

What do you guys use on aluminum? I get different answers. I use eezox to prevent rust but it stained my aluminum breech. Not sure what to use on it so the bolt runs smoother. Your help would be appreciated. Thanks

[Mr Fluffy Tail]

for general protection, air venturi metalophilic oil .. moly paste is good on things like your talking about but it may indeed have a staining affect .. i know something that has excellent lubing qualities and would not stain or cause a mess - dupont chainsaver with teflon, excellent stuff ...

[ancient1one]

Here is a link to an independent test of 46 different products that inhibit corrosion and reduce friction.

http://www.dayattherange.com/?page_id=3667

[nervoustrigger]

Good old 30W non-detergent oil or automatic transmission fluid (ATF) is good for aluminum.  Molybdenum (moly) is not a particularly good lubricant for it the way it is for steel.

And not to put too fine a point on it, but bare aluminum oxidizes, it does not rust.  The oxide is actually harder than the base material and provides protection so it is a good thing.  Same principle with anodizing, only anodizing can be better.

That's why keeping a mirror polish on aluminum rims is an exercise in futility.  Mother Nature will beat you every time in that battle of attrition.

[Sinjentic]

Can all these oils be used when  using HPA?

[nervoustrigger]

Please be more specific about where you would use it.  There can't be many places where there is a combination of high pressure air and moving aluminum parts that are subject to wear.  Actually, I'm struggling to think of one in the airgun world.

A thin film of oil on the breech and bolt, for example, is okay.  Coating the inside of a HPA cylinder or bottle is not, at least not with conventional oils which may be subject to combustion.

Silicone oil is commonly used where combustion is a concern.  It is good for O-rings sliding on metal, such as a bolt O-ring or dynamic O-rings in a high pressure pump.  However it is not a good metal-on-metal lubricant.