I just heard this in a gun forum in a lubrication thread and I can't beleive it, but I thought I'd need to go to a lubrication forum to either confirm or disconfirm.
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To a certain degree it is. It also depends on the chemicals and additives used in the ATF. They often contain additives to protect against corrosion, and contain detergents and dispersants. Water can bind at the molecular level with these chemicals and additives and also form suspensions.
You can easily test with a drop of water and a capped jar of ATF. Mix and shake and observe what happens. Does the water drop "disappear"? Does the solution become cloudy? Can you see two liquid phases?
You can easily test with a drop of water and a capped jar of ATF. Mix and shake and observe what happens. Does the water drop "disappear"? Does the solution become cloudy? Can you see two liquid phases?
If the water stays as a droplet then the ATF is non-hygroscopic? But if the water droplet disaapears in the ATF then is hygroscopic?
Pretty much correct. However, with increased temperature, ATF chemical changes, etc., the droplet could go into solution where it might not in new ATF and room temp.quote:Originally posted by Count:
If the water stays as a droplet then the ATF is non-hygroscopic? But if the water droplet disaapears in the ATF then is hygroscopic?
This is for guns, right? The ATF being the ideal gun lube came out of an article written by a gunsmith several years ago (forgot the name). It did not come from a lube expert and the article had several flaws in it.
Motor oil has far higher levels of AW as well as corrosion fighting chemistry. ATF is an inferior product for guns. SL rated oils will have higher levels of ZDDP. M1 high mileage would be ideal for an off the shelf option.
Motor oil has far higher levels of AW as well as corrosion fighting chemistry. ATF is an inferior product for guns. SL rated oils will have higher levels of ZDDP. M1 high mileage would be ideal for an off the shelf option.
Tempest is correct. It is often not the lubricant base oil that protects against corrosion, but rather the rust prohibitor additives.
Here is a comparison of corrosion protection of 30 motorcycle oils on page 20 and 21 at http://www.amsoil.com/lit/g2156.pdf?zo=1181889 .
Here is a comparison of corrosion protection of 30 motorcycle oils on page 20 and 21 at http://www.amsoil.com/lit/g2156.pdf?zo=1181889 .
I am wondering if Grant Cunningham is the gunsmith you're referring to Tempest:
http://www.grantcunningham.com/lubricants101.html
http://www.grantcunningham.com/lubricants101.html
