In various posts on the board I have seen reference to "high temperature" grease for packing wheel bearings. Is acceptable grease to be found at Auto Zone (or other such stores), and should high temp be specified ?
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Re: Bearing grease
You can find hi temp grease at Autozone or any decent parts store. If you are looking for wheel bearing grease look for some reference to wheel bearing service on the package. Grease suitable for wheel bearings is supposed to be a bit more water resistant than common chassis grease. Most any high quality grease will meet these specs. -
Re: Bearing grease
Steve-----
I use and recommend Valvoline Synpower Synthetic Grease, product #985 as it meets GM's most rigourous spec for high temperature wheel bearing grease. Valvoline's synthetic/conventional blend grease does, too. Either are available at Kragen/Chief so Autozone might carry them, too.
Sta-Lube High Temperature Wheel Bearing Grease is also an excellent lubricant of conventional base stock. It is very widely available.
GM #1051344 is also an excellent grease of conventional base stock. However, it is only supplied in 1 pound tubs making the loading of grease guns for a bearing packer difficult. But, if you don't mind hand-packing your bearings, it's fine.In Appreciation of John HinckleyComment
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Drop point
The high temperature characterisics of grease is described by the "drop point'. This is the temperature that the oil flows out of the solids that hold it in suspension. For disk brake applications you want at least a 450F drop point and the labeling on some brands specifies the drop point.
Greases that use synthetic oil bases are superior because of their better viscosity index and greater resistance to oxidation.
DukeComment
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Re: Bearing grease
I have had problems with the Valvoline synthetic grease separating so that the most liquid part of the grease (oil?) leaks out of the grease gun and makes a mess. It makes me wonder if it is separating in the fitting and allowing damage. Is this a commmon experience?Comment
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Re: Bearing grease
Mike-----
Just about any grease that I have used will do, to some degree, what you describe in the grease gun.In Appreciation of John HinckleyComment
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