Steering Box lube
Thread Starter
Advanced
Joined: Aug 2009
Posts: 54
Likes: 0
Steering Box lube
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
Where can I order that product.
WTBRS 123
CF Community Team
Joined: Oct 2004
Posts: 19,352
Likes: 5,240
From: Cape Cod, Mass.
2025 C6 of the Year Finalist - Unmodified
2025 C8 Z06/7/E-Ray of the Year Finalist - Unmodified
2023 C3 of the Year Finalist - Unmodified
2021 C8 of the Year Finalist Unmodified
2020 Corvette of the Year Finalist (performance mods)
2019 C1 of Year Winner (performance mods)
2017 Corvette of the Year Finalist
2016 C2 of Year
2015 C3 of Year Finalist
Chassis lube/grease is what I use. Mobil 1 works fine. (Not the oil, but the chassis grease/lube).
Team Owner
Joined: Jan 2006
Posts: 37,637
Likes: 3,114
From: Crossville TN
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.
Corvette Stories
The Best of Corvette for Corvette Enthusiasts
Top 10 Corvette Engines RANKED by Peak Torque (70+ Years of Muscle!)
Joe Kucinski
Corvette ZR1X Will Be Pacing the Indy 500, And Could Probably Race, Too!
Verdad Gallardo
Top 10 Corvettes Coming to Mecum Indy 2026!
Brett Foote
Top 10 C9 Corvette MUST-HAVES to Fix These C8 Generation Flaws!
Michael S. Palmer
10 Revolutionary 'Corvette Firsts' Most People Don't Know
Joe Kucinski
5 Reasons to Upgrade to an LS6-Powered Corvette; 5 Reasons to Stay LT2
Michael S. Palmer
2027 Corvette vs The World: Every C8 vs Its Closest Competitor
Joe Kucinski
10 Most Common Corvette Problems of the Last 20 Years!
Joe Kucinski
5 MOST and 5 LEAST Popular Corvette Model Years in History!
Joe Kucinski
Team Owner
Joined: Jan 2006
Posts: 37,637
Likes: 3,114
From: Crossville TN
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.
Le Mans Master
Joined: Aug 2006
Posts: 7,413
Likes: 1,552
From: mount holly NC
2025 c3 ('74-'82) of the Year Finalist - Unmodified
2019 C3 of Year Finalist (appearance mods)
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.
Pro
Joined: Sep 2002
Posts: 624
Likes: 1
From: Melbourne, Fla. 6 months- New Middletown, Ohio 6 months
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.
