Forums
New posts
Search forums
Image search
Shop
Amazon Store
T-Shirts
Stickers
Members
Current visitors
Supporting Member Upgrade
Sponsors
About
Log in
Register
Search
Search titles only
By:
Search titles only
By:
New posts
Search forums
Image search
Search
Search titles only
By:
Search titles only
By:
Menu
Install the app
Install
JavaScript is disabled. For a better experience, please enable JavaScript in your browser before proceeding.
You are using an out of date browser. It may not display this or other websites correctly.
You should upgrade or use an
alternative browser
.
Forums
Jeep Wrangler YJ
YJ General Discussion
Improving synchro shifting problems by using different gear lube weights or additives?
Reply to thread
Message
<blockquote data-quote="Gilaguy23" data-source="post: 429453" data-attributes="member: 19498"><p>For some reason folks seemed to think MT-1 means great for all stick trannies. Not the case. The <strong>designation</strong> API <strong>MT</strong>-<strong>1</strong> denotes lubricants intended for nonsynchronized manual transmissions used in buses and heavy-duty trucks.</p><p>GL5 oils have a sulfur content that that destroys softer metals "yellow metals" as many call them. That would be the syncro rings and possibly bushings in some cases. GL4 and down does not have the damaging sulfur thus the recommendation. There are some manuals that now use carbon fiber syncros andIi dont believe the GL5 will do damage. I think I mentioned it that the likes of Summit racing or Jegs and other do in fact carry GL4 lubes as well as synthetic ATF.</p></blockquote><p></p>
[QUOTE="Gilaguy23, post: 429453, member: 19498"] For some reason folks seemed to think MT-1 means great for all stick trannies. Not the case. The [B]designation[/B] API [B]MT[/B]-[B]1[/B] denotes lubricants intended for nonsynchronized manual transmissions used in buses and heavy-duty trucks. GL5 oils have a sulfur content that that destroys softer metals "yellow metals" as many call them. That would be the syncro rings and possibly bushings in some cases. GL4 and down does not have the damaging sulfur thus the recommendation. There are some manuals that now use carbon fiber syncros andIi dont believe the GL5 will do damage. I think I mentioned it that the likes of Summit racing or Jegs and other do in fact carry GL4 lubes as well as synthetic ATF. [/QUOTE]
Verification
Post reply
Forums
Jeep Wrangler YJ
YJ General Discussion
Improving synchro shifting problems by using different gear lube weights or additives?
Top
Bottom