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Grease incompatibility: from metal base or other? #4785926
06/13/18 01:47 PM
06/13/18 01:47 PM
Joined: May 2018
Posts: 6
Northern KY
Elkins45 Offline OP
Elkins45  Offline OP
Joined: May 2018
Posts: 6
Northern KY
I have read for years that you need to clean out all of the existing grease before adding new in case the new grease is incompatible. It even says that on the grease container. I would like to know if that incompatibility is due to the metal base of the grease or if itís because of certain additives?

So letís say my tractor came from the factory lubricated with a lithium grease. Would I be OK using any other lithium based grease? Thereís really no way to know which particular product was used and I donít want to go running to the Kabota dealer every time I need a tube of (overpriced) grease.

My main concern is with trailer bearings. Is there a way to test if the grease in my gun is compatible with the grease thatís already in the bearings, or do I just have to bite the bullet and pull down the hubs of my new used trailer and repack them?

Last edited by Elkins45; 06/13/18 01:47 PM.
Re: Grease incompatibility: from metal base or other? [Re: Elkins45] #4785991
06/13/18 03:48 PM
06/13/18 03:48 PM
Joined: Aug 2003
Posts: 3,608
lllinois
salesrep Offline
salesrep  Offline
Joined: Aug 2003
Posts: 3,608
lllinois
Grease incompatibility is dependent on the thickener.



High quality Specialized Lubricants pay for themselves!
Re: Grease incompatibility: from metal base or other? [Re: Elkins45] #4786720
06/14/18 02:08 PM
06/14/18 02:08 PM
Joined: May 2018
Posts: 6
Northern KY
Elkins45 Offline OP
Elkins45  Offline OP
Joined: May 2018
Posts: 6
Northern KY
I suppose there's no easy way to determine what kind of grease is already there?

Re: Grease incompatibility: from metal base or other? [Re: Elkins45] #4788504
06/16/18 07:03 PM
06/16/18 07:03 PM
Joined: Nov 2009
Posts: 20
USA
RDMgr Offline
RDMgr  Offline
Joined: Nov 2009
Posts: 20
USA
Incompatibility can be based on thickeners, additives and base oils. The ASTM method for determining compatibility of binary grease systems looks at both thickener and chemical compatibility. Thickener incompatibility usually results in consistency changes beyond the range established by the performance of the neat greases. Chemical compatibility usually results in loss of performance such as corrosion protection, EP or anti-wear.

As far as what kind of grease is used for factory fill, go on their website and try to find a PDS or SDS. This may give you a type but it won't give you compatibility with other commercial greases

Re: Grease incompatibility: from metal base or other? [Re: Elkins45] #4788822
06/17/18 04:52 AM
06/17/18 04:52 AM
Joined: Jul 2003
Posts: 4,741
New Zealand
Silk Online content
Silk  Online Content
Joined: Jul 2003
Posts: 4,741
New Zealand
For wheel bearings it's standard practice to strip, clean and repack. For bushes and any other greaseable point, you just squirt in what's in your gun.


1987 BMW R65 - Penrite V Twin 20/50
2005 Nissan Expert - Gulf Western 10W-40
1996 Volvo T5 - Penrite HPR15 - 15W-60. Ryco syntec filter.
Re: Grease incompatibility: from metal base or other? [Re: Silk] #4796698
06/24/18 09:21 PM
06/24/18 09:21 PM
Joined: May 2018
Posts: 6
Northern KY
Elkins45 Offline OP
Elkins45  Offline OP
Joined: May 2018
Posts: 6
Northern KY
Originally Posted By: Silk
For wheel bearings it's standard practice to strip, clean and repack. For bushes and any other greaseable point, you just squirt in what's in your gun.


I ended up pulling the hub and cleaning it out. Now Iím off to the parts store for new seals.


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