Originally Posted By: AMC
Originally Posted By: Tempest
It appears to be a very good grease. I've seen this at many different retailers. I think that NGLI #2 grease is much thicker than is needed on a gun. A #1 would be much better.
A word of caution on using automotive grease for firearms. Make sure the grease has a smooth, creamy texture rather than a tacky, sticky, stringy/leggy texture if you are going to use it for guns. A grease that has a tacky texture and is over applied can actually cause a malfunction in weapons that require reciprocating mass to function properly. If you over apply a a tacky grease, you will actually INcrease friction between the moving parts and tighten up tolerances at the same time, almost like gluing the parts together. In the case of auto pistols, this will make the slide noticeably harder to rack and slower during its movement. This means any semi auto and rimfires especially.
Another thing to consider is that most automotive grease is designed to be used in a mostly sealed environment and replaced at intervals. Most greases will dry out badly if left in the open air and not worked frequently, like they would be if applied to a firearm.
I made this mistake with my cz-75 once. I applied dabs of lithium complex wheel bearing grease everywhere I normally applied oil, put the gun back together and put it back in the safe. A few days later I went to rack the slide to load it and found the slide [censored] near glued to the frame. After giving it a quick jerk, the slide opened normally but it felt much harder to rack than usual. I knew this wasn't right and immediately cleaned all the grease off and re-applied oil. Once I did that, everything was back to normal and the slide was very easy to rack again.
In general, my advise is simply to not use grease on semi-autos unless you have a garand operating system. Examples being the garand, m1a, mini-14 series etc.
