Muncie Oil - Please Advise - Team Camaro Tech
Transmission & Driveline Transmissions and Differentials

LinkBack Thread Tools Display Modes
post #1 of 5 (permalink) Old Apr 22nd, 13, 06:29 PM Thread Starter
Senior Tech
Join Date: Aug 2012
Location: Ontario, Canada
Posts: 126
Muncie Oil - Please Advise

I am having the hardest time finding and buying the right Oil for the tranny.
I know it needs to be GL-4 - cannot be GL-5
Cannot be synthetic of have any blend of synthetic as the detergents are hard on the syncros.

Every can of oil i seem to locate says it conforms to GL4 and GL5.
I thought I had it licked...bought Lucas Oil - I think it was 75-80 w. It said it was high performance Differential and Manual Transmission Oil
Called Lucas - they said that ALL of their oils are of a synthetic blend, and I would need to add an additive etc etc blah blah blah.
Sorry, don't have a Chemistry Degree.

Can it really be this HARD ? Can someone tell me a make/viscosity etc. and hopefully available at AutoZone or Advance or NAPA - in the USA

Thank you Thank You
SS-Scotty is offline  
Sponsored Links
post #2 of 5 (permalink) Old Apr 22nd, 13, 06:31 PM
Senior Tech
Join Date: Feb 2013
Location: Southern NH
Posts: 2,246
Re: Muncie Oil - Please Advise

Go to your local NAPA store and pickup some Sta-Lube GL4 85-90w gear oil.

69 Camaro Z/28 RS, original Azure Turquoise, M21 & 3.73 12-bolt posi. NOM 406ci, AFR 210 heads, Straub hyd. roller cam & Dynatech 1-3/4" > 1-7/8" headers, QuickFuel 750 Annular. Photos at:
NH69Z28RS is offline  
post #3 of 5 (permalink) Old Apr 22nd, 13, 09:16 PM
Senior Tech
Join Date: Dec 2003
Location: Leander, TX
Posts: 2,765
Re: Muncie Oil - Please Advise

Originally Posted by NH69Z28RS View Post
Go to your local NAPA store and pickup some Sta-Lube GL4 85-90w gear oil.
...what he said,..NAPA part number SL24229 (quart bottle).

Or, if you'e feelin' rich, head to your Chevy counter and ask for GM part number 89021671 (23 ounce bottle).

Stay away from any gear oil (which includes most all being sold today at parts stores) that have "Limited Slip Additive included" or "Positraction Additive added", etc. This extra slipperyness (new word) will screw up your synchros (they don't slow down quick enough) and will make for balky shifting in your Muncie.

GL-4,..tried and true!
Straight-line-69 is offline  
post #4 of 5 (permalink) Old Apr 23rd, 13, 01:00 AM
Gold Lifetime Member
ROBS6T8's Avatar
Join Date: Mar 2005
Location: Templeton, Ca USA
Posts: 2,268
Re: Muncie Oil - Please Advise

Yes, what they said.... Napa is the only place I could find the Sta-Lube gl-4.

68 Camaro SS... getting there!!
"If happiness is in your destiny, you need not be in a hurry."
If I can only convince myself of this!

My slooow build thread
ROBS6T8 is offline  
post #5 of 5 (permalink) Old Apr 23rd, 13, 03:14 AM
Super Moderator
Jake-68's rule
Everett#2390's Avatar
Join Date: Sep 2000
Location: Va Beach VA
Posts: 29,348
Re: Muncie Oil - Please Advise

Yep, GL-4, no additives.
You can fill the trans through the shifter boot with a hose, preferredly clear, and a coat hangar to hang the bottle from the rear view mirror.
Punch a hole in the bottom of the upside-down bottle and let gravity takes it course.

Give a man a rescued dog for the health of both their souls.
'With age comes wisdom, but then wisdom ages you even more.' GO CUBS! Other Stuff
Everett#2390 is offline  
Sponsored Links

Quick Reply

Register Now

In order to be able to post messages on the Team Camaro Tech forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.

User Name:
Please enter a password for your user account. Note that passwords are case-sensitive.


Confirm Password:
Email Address
Please enter a valid email address.
NOTE we receive a lot of registrations with bad email addresses. IF you do not receive your confirmation email you will not be able to post. contact support and we will try and help.
Be sure you enter a valid email address and check your spam folder as well.

Email Address:


Human Verification

In order to verify that you are a human and not a spam bot, please enter the answer into the following box below based on the instructions contained in the graphic.

Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page
Display Modes
Linear Mode Linear Mode

Posting Rules  
You may post new threads
You may post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On

For the best viewing experience please update your browser to Google Chrome