What do you guys like and why… Oil or Grease?
Oil.
Weapon Shield or Slip2000 EWL are my personal choices.
-RD62
I’ve been using Tetra and it works just fine.
Oil or grease? Depends on the part. Hi wear spots tend to get a little spot of grease with the oil, from me. Why? No method to the madness, just seems to work. I have used: http://www.militec.com/ for a while, and like it.
This: http://crusaderweaponry.com/shop.php looks amazing, and some people local to me swear by it. I still need to use up my Militec before I try it.
I know others that use mobile 1 with no complaints either. Seems a cheaper, no-fuss way to go for sure.
YMMV. Get a few top lubes and see what you like. Depending on what weight recoil spring you are running, especially with lighter loads, a thicker grease may give you slide drag.
FP10.
TW25B and Weapons Shield.
Best, Jon
Oil…i use the little brownell’s red stuff
And never look back.
I like the Wilsons grease, it stays where put and doesn’t run off.
Both!
Grease: Slide rails, barrel bushing, barrel lugs, link
Oil: everything else
Grease as it stays put.
Samey, same.
Miltec, but whatever you use, use plenty of it 
Redline 20-50, works well in the AR too, and doesn’t breakdown as fast as petro products!
I used FP10 in the 90s and it was a good lube. Mobil 1 was also great. These days, I use ATF if I need an oil that’ll creep into the guts of a pistol.
For grease, I use TW25. Before that, I was using Lubriplate. Both good.
I use Tetra or Machine gunners oil.
ATB (Absolutely the Best) chain lube. Works great for all weapons.
The same Plastilube (aka, Lubriplate) that I use on my M1 Garands and M1 Carbine.
They do get a little sluggish is in sub-freezing weather.
Well I guess it was time for another lube thread.
Per this thread WeaponShield CLP and SuperLube Grease for me.
miltec for me too. I use their grease on the slide and the oil everyplace else.