Grease ratings?

[Chris B.]

I was wondering what the different ratings for grease mean?
I think I'm suppose to use an LB rated grease for my truck, is this correct? Is there any other rating the grease needs to meet?

I just started to use Schaeffers 221#2 for the truck, is this LB rated?
Thanks for the input!

 

[RB Shannon]

(Condensed from Lubricating Grease Guide)
The NLGI(National Lubricating Grease Institute) specication for automotive service greases came into being in 1989. L designates chassis,G designates wheel bearings.

LA-Frequent lubrication/mild duty with oxidation resistance,shear stable,and corrosian and wear protection

LB-Longer relubrication interval,severe duty(protection under heavier loads and the presence of water)-40 to 120*C

GA-Frequent relubrication,mild duty -20 to 70*C

GB-Mild to moderate duty with oxidation and evaperation resistance while protecting from corrosion and wear. -40 to 120*C/160*C occasionally

GC-Mild to severe duty with frequent temps. to 160*C and occasionally to 200*C

Here is page with a chart describing the Automotive Grease Specifications

I use the #221 in our farm equiptment and vehicles and and and more than happy with it.

 

[Chris B.]

Thanks RB Shannon! That's what I was wondering!

 

[9c1]

How come Schaeffers doesn't have any NLGI listing on it, or did I get experimental packaging?

 

[RB Shannon]

I've wondered this myself, the only reason I can think of is that their market is mostly commercial,trucking,etc. and it wouldn't serv much purpose for them.