Schaeffers 221 and 274 LB rated?

[Chris B.]

That is the question. I did not see it on Schaeffers web site. I found out my Truck needs and LB rated grease.

 

[RB Shannon]

Here is a list of the tests and acceptance limits for the LB classification, limits are in perenthesis. I believe they meet most of the specs but aren't certified maybe because their market.
I had a heck of a time keeping it somewhat lined up and I type with two fingers

Properties and ASTM Test Method

Worked Penetration D 217 (220 to 340)


Dropping Point (°C D 556 or D 226 (150)


Four Ball
Wear (mm) max D 2265(NA)


Four Ball EP D 2596(NA)
LWI (kg) min
Weld Point (kg) min (200)

Elastomer Compatibility D 4289
CR, Volume Change (%) (0to 30)
CR, Hardness Change (0 to -10)
NBR-1, Volume Change (%)(NA)
NBR-1, Hardness Change (NA)

Oil Separation (%) max D 1742 (10)

Rust, max D 1743 (Pass)

Fretting Protection (mg loss) D 4170 (10)

Low Temperature
Torque at 40°C (N-m) D 4693 (15.5)

Water Resistance at 80°C
(%) max D 1264 (15)

High Temperature Life
(h) min D 3527 (40)

Leakage Tendency (g)
max D 4290 (24)

 

[salesrep]

copper strip corrosion test astm d-4048 is 1a

 

[Chris B.]

So these are really not LB rated? I have been using them for a while now and I'm wondering if I have anything to worrie about now with My ball joints and tire rod ends wearing. I always thought that these 2 greases(221 and 274 were the best for this use. Does it matter if it is not LB ratted or will an LB ratted grease give my truck better protection? Thank you!!

 

[salesrep]

You have nothing to worry about. The lb rating is just another classification system and if you were to pour over all the cross reference data etc. I think you'd find that 274 and 221 exceed and meet.

 

[Chris B.]

Ok I'll keep using them, Thanks!