The lithium grease I have is a transparent red, it's for intrument use. A friend had a big container and gave me some in a small mustard jar which of course does not have the grease manufacturer's name on it. It doesn't separate at all in the jar, but who knows what time will do to it. The lenses are stored indoors in temperate and dry coditions, but are used in temperatures from -25f to +90f. It gives a very nice low drag but smooth feel to the focussing, which in my opinion is worth cleaning the thing every 20 years or so.
Originally Posted by Nicholas Lindan