Quick advice on bearing grease..

[OGBeno]

Funny this kind of discussion still pops up after years of discussion.

At this point I run the cheapest s*** I can find and change it out more often. I do birfs and wheel bearings once a year regardless. I run the NGO/Africa maintenance plan.

 

[Cruiserdrew]

Yup, you're reading it wrong. Wheel bearings are part of the application.

Maybe, but it doesn't say it is good for disc brake wheel bearings(that is a separate specification), and the base is wrong too. A Lithium based grease is what is specified and this is a calcium-sulfonate based greased. It sounds like great stuff for pivot points on heavy equipment, and maybe even wheelbearings on slow moving earth movers, but not the right stuff for high speed disc brake wheel bearings. So thanks for the links, but I am not convinced this would be the right stuff for anything on a Land Cruiser.

 

[-Spike-]

There is some debate whether the moly grease would not have enough friction to allow the rollers to roll in the wheel bearings (thus making them slide instead). That being said, I still use moly grease in my wheel bearings.

Think about this- if the moly grease was so slippery that the rollers wouldn't even roll, wouldn't that be a good thing? No friction= no wear. NO WEAR. Sign me UP!

However, that's not the case, which is too bad.

 

[7schulz]

Nope, Toyota spec'd the "proper" grease. Moly is the same spec grease with an additional additive. It isn't more slippery, it's benefit is; better protection for heavily loaded sliding surfaces, so unnecessary/overkill for wheel bearings. Lots of real world miles have shown that it works well in wheel bearings and most grease manufactures spec it as acceptable in them. I only run it in the birfs, because it is nasty, messy stuff and no one is attempting to force you to run it, so chill, run what you prefer!

I'm just saying to the OP that Toyota spec'd grease for a reason. I use this Valvoline.com > Products > Valvoline > Grease Valvoline > Valvoline® Moly-Fortified Multi-Purpose Grease Ford from napa to fill the birfs through the port in the top and I have never greased a wheel bearing on a LC. If I did, I would find a grease that meets the spec in the FSM.

 

[nuclearlemon]

Maybe, but it doesn't say it is good for disc brake wheel bearings(that is a separate specification),.

what would the difference be between a bearing used in any old wheel vs a bearing used in a disc brake application?

60 years ago, there was a difference in drop points, but not so true anymore. kind of like how people used to run straight weight oils, where as now oils span a range of temperatures

 

[-Spike-]

what would the difference be between a bearing used in any old wheel vs a bearing used in a disc brake application?

60 years ago, there was a difference in drop points, but not so true anymore. kind of like how people used to run straight weight oils, where as now oils span a range of temperatures

I dunno, but some greases are spec'ed for disc brake bearings, some aren't. That's one spec I'll stick to.

 

[Cruiserdrew]

what would the difference be between a bearing used in any old wheel vs a bearing used in a disc brake application?

60 years ago, there was a difference in drop points, but not so true anymore. kind of like how people used to run straight weight oils, where as now oils span a range of temperatures

Difference is, disc wheel bearings run much hotter when braking-like down a long hill. The grease has to be stable with that and not melt out or degrade. It's mostly a temperature specification.

 

[Tools R Us]

I'm just saying to the OP that Toyota spec'd grease for a reason. I use this Valvoline.com > Products > Valvoline > Grease Valvoline > Valvoline® Moly-Fortified Multi-Purpose Grease Ford from napa to fill the birfs through the port in the top and I have never greased a wheel bearing on a LC. If I did, I would find a grease that meets the spec in the FSM.

That grease meets the spec and also has moly. From the linked page:

NLGI #2 Grade LB Lithium

And:

This superior general grease is fortified with molybdenum disulfide to provide excellent extreme-pressure and anti-wear protection for disc-brake wheel bearings, chassis, suspension and universal joints.

 

[Tools R Us]

what would the difference be between a bearing used in any old wheel vs a bearing used in a disc brake application?

60 years ago, there was a difference in drop points, but not so true anymore. kind of like how people used to run straight weight oils, where as now oils span a range of temperatures

It's true that most automotive grease now meets the disk brake spec, that wasn't always true. Went looking at the greases here and only found one tube that didn't, Pressol lithium #2, states; Not recommended for disk brake wheel bearing applications. It is likely very old stuff!

 

[Tapage]

my last knuckle birf job I use this one .. so happy with it so far ..

Mobil Canada | Heavy Duty Engine Oils | Greases | Mobilgrease XHP 222

 

[Tacoma4life]

I'm thought I read on bitog.com that moly fortified grease isn't recommended for wheel bearings because moly is so 'slippery' it can let the balls or rollers slide rather than roll.

 

[TrickyT]

There was a similar discussion on all of this, but from the birf perspective, earlier this year: https://forum.ih8mud.com/80-series-tech/461197-chewbaccas-birfield-grease-guide.html

 

[-Spike-]

I'm thought I read on bitog.com that moly fortified grease isn't recommended for wheel bearings because moly is so 'slippery' it can let the balls or rollers slide rather than roll.

See post #23.

I run moly in the bearings, and crank the adjusting nut to 20 ft/lbs. If there were going to be problems with the rollers sliding, I'd have them.

 

[CREACHR]

So much for "quick advice" as the thread asked. Funny that this topic still comes up over and over again. Let the debate continue.

Sent from my iPad using IH8MUD