steering box fluid

[Robert K.]

Can anyone tell me what is the correct steering box fluid? Were having different opinions on 80-90 gear fluid or grease? Note it is not power steering...
Thanks....

[William C.]

Re: steering box fluid

Service manual says EP Chassis Lubricant.

[Joe L.]

Re: steering box fluid

Can anyone tell me what is the correct steering box fluid? Were having different opinions on 80-90 gear fluid or grease? Note it is not power steering...
Thanks....

Robert------


The original lubricant was GM #1052084. This was a grease. GM #1052084 was discontinued quite a few years ago and replaced by GM #12377985, a multi-purpose chassis lubricant. This is what I use and recommend for most chassis lubrication except wheel bearings.

Most other GM manual steering gear boxes used a different lubricant. It was GM #1052182. This was ABOUT a 90 wt viscosity. This is the reason for the confusion relative to the correct steering gear lubricant.

[Edward J.]

Re: steering box fluid

Robert, the chassis lube GM part no. is 12377985

[Gary R.]

Re: steering box fluid

If you use gear oil it will leak out almost for sure. Some greases separate more then others and I've had a small number weep oil through sealant.
There is another thread going on now about box greasing as well.

[Robert K.]

Re: steering box fluid

Service manual says EP Chassis Lubricant.

Thanks didn't see it in the 63 service manual, GM manual what page? Is that Grease? What Does EP stand for?

[Joe L.]

Re: steering box fluid

Thanks didn't see it in the 63 service manual, GM manual what page? Is that Grease? What Does EP stand for?

Robert------


Yes, it's grease. "EP"= "Extreme Pressure"