I grew up on a dairy farm in the eighties and our machinery was older but fairly reliable due to care and maintenance. I started greasing machinery as a little kid and have loved the smell of used grease ever since (much better than new grease)
Anyway, I have always used either shell retinax (now called gadus) or valvoline (crimson, cerulean) that I got at my local napa store. I used one or the other for long periods, not mixing them.
I try to grease my big truck every 3,000 to 5,000 miles. Besides the warm fuzzies I get
I enjoy the "feel" of a freshly greased front end. Back in august I forgot to renew my supply and found myself with down time in kansas city. I walked to the KW dealer and bought JT-6 because it was all they had (as I recall anyway).
Finally my observations: #1 it pumps slightly harder (just enough to notice)
#2 it has never dripped from my gun, even in august
#3 it is tacky to the point of slight annoyance
#4 stays put much longer. The rubber boots stay full much longer and the other parts need very little grease before I see purging of old grease. When grease purges from the slack adjusters on the brakes it is closer to it's original color than other brands. Others turned brownish.
#5 it maintains that freshly greased front end "feel" for several thousand miles, thus I now grease half as often with peace of mind. I grease half as often and still takes less actual grease when I do.
#6 finally my favorite thing about this grease....I put in a new tube, it immediately starts pumping out and it works perfectly 'til the tube is empty. No exceptions....
Just my notes...I tried it because i ran out of my usual brand by mistake and absolutely love this stuff. I do not know anything technical about grease, just telling my observations.

Anyway, I have always used either shell retinax (now called gadus) or valvoline (crimson, cerulean) that I got at my local napa store. I used one or the other for long periods, not mixing them.
I try to grease my big truck every 3,000 to 5,000 miles. Besides the warm fuzzies I get

Finally my observations: #1 it pumps slightly harder (just enough to notice)
#2 it has never dripped from my gun, even in august
#3 it is tacky to the point of slight annoyance
#4 stays put much longer. The rubber boots stay full much longer and the other parts need very little grease before I see purging of old grease. When grease purges from the slack adjusters on the brakes it is closer to it's original color than other brands. Others turned brownish.
#5 it maintains that freshly greased front end "feel" for several thousand miles, thus I now grease half as often with peace of mind. I grease half as often and still takes less actual grease when I do.
#6 finally my favorite thing about this grease....I put in a new tube, it immediately starts pumping out and it works perfectly 'til the tube is empty. No exceptions....

Just my notes...I tried it because i ran out of my usual brand by mistake and absolutely love this stuff. I do not know anything technical about grease, just telling my observations.