Grease caracteristics and uses

[Richard1]

There are different purposes for different types of grease.
Without looking them up, do you know what these symbols certify?

[Richard1]

Don't be afraid to answer. It is anonymous.
I have a feeling it is a little known secret that would need addressing.

[66Monza140]

Top: chassis grease

Bottom: Bearing grease - higher Timken value

[Richard1]

I take if from no one answering that this is a good thing to clear up. Grease is categorized for automotive use by these symbols.
Chassis grease starts with an L. LA was once the standard, but was then improved to LB. So any grease for chassis, steering, etc. should have the LB symbol on the container.

Chassis grease does not protect ball bearings well, and will generally melt in wheel bearings, especially with disc brakes, so the G category was developed. At first it was GA, and maybe a GA would work with non disc brakes. Then along came GB, and currently GC. Any grease with GC on it will work well on wheel bearings with disc brakes.

Most GC greases will also work well on chassis/steering components, so they will be labeled LB-GC, covering both categories.

Of course there are different qualities within a category, with synthetics lasting longer in sealed applications, ans some greases offering protection at higher levels than others, but any grease with the LB-GC on it will work as long as any previous grease is cleaned out. In general, mixing types of grease (different thickeners) will cause it to turn runny separate like cottage cheese.

[cad-kid]

Good stuff as usual Richard. Good post

[County98]

Yup, thanks for the info. I was just trying to learn what to use the other day. Now I'll just go get some LB-GC Synthetic and use it on everything!