wtbrs123

I need to add lube to my 79 steering box. I have not been able to find the GM product part number is GM 1# 12377985 which seems to be a grease, all other products I found with Corvette vendors seems to be a oil, The article clearly noted not to use a oil product.
Where can I order that product.

WTBRS 123

capevettes

Chassis lube/grease is what I use. Mobil 1 works fine. (Not the oil, but the chassis grease/lube).

wtbrs123

Thanks I thought about that. I figured I would give the GM product a try but I'm sure I will do the same.

Thanks again

7T1vette

I put synthetic steering gear lube in mine. It will last longer and take the engine compartment heat better without drying out. Just make sure you leave some air-space in the unit when you button it up; it needs to have room for expansion of grease when it heats up.

wtbrs123

Thanks.

stock76

I use Mobil1 synthetic grease too.

wtbrs123

How much air space should I leave? I pulled the bottom bolt and ran a wire in about 11/2 to 2 inches before I hit grease.
Thanks for your help.

wtbrs123

Artsvette73

For a fresh rebuild the shop manual calls for 11oz. For anything else your guessing.

7T1vette

Fill it from the rear bolt hole and let it fill till you see it in the front bolt hole (of the upper cover....leave the 3rd bolt alone). You should probably have 1/2" (or so) of airspace.

Peterbuilt

Good idea to check the steering box lube, a lot of time it gets overlooked and that 25+ year old grease is just caked and useless. PG.

wtbrs123

Will do, Thanks

WTBRS123

wtbrs123

Thanks, Its not a rebuild its in service. I just want to top it of so it can last another 30 years.

Thanks again.

Red 71

Lucas "Red N tacky" #2 Fill it to the top or close to it. I do have a vented bolt in the top position. Have never had a overflow issue. Also do not have headers.