Geonovast Posted March 27, 2010 Share Posted March 27, 2010 You mean this Will? Pic sucks.. I do remember reading multiple times that the synchros for the AX-4/5 and AX-15 are different. Brass and Bronze, Bronze and Brass.. whatever. Link to comment Share on other sites More sharing options...
wyk Posted March 27, 2010 Share Posted March 27, 2010 So, uh, what should I use on my 86 2.8 5 speed then? Er.... Link to comment Share on other sites More sharing options...
Pete M Posted March 27, 2010 Share Posted March 27, 2010 any GL-5 rated gear oil. :thumbsup: Link to comment Share on other sites More sharing options...
whowey Posted March 28, 2010 Share Posted March 28, 2010 then the plot thickens. since the AX-5 still has a GL-5 requirement. :dunno: Maybe it's the exact composition of the synchros that's important. Well.. if you listen to Chrysler the AX-15 no longer requires any GL... they recommend motor oil now... Link to comment Share on other sites More sharing options...
Pete M Posted March 28, 2010 Share Posted March 28, 2010 yeah, because they didn't want to pay to make the special stuff anymore. motor oil doesn't have the bad stuff in it. :thumbsup: Link to comment Share on other sites More sharing options...
whowey Posted March 28, 2010 Share Posted March 28, 2010 yeah, because they didn't want to pay to make the special stuff anymore. motor oil doesn't have the bad stuff in it. :thumbsup: They never made the GL-3... they wanted to reduce the number of things they had to buy from outside sources... as long as you reduce the fluid change interval it won't be as bad... But... the correct fluid is available.. and we already know that Chrysler completely blew the recommendation for the AX-15(and the AW-4). Link to comment Share on other sites More sharing options...
Pete M Posted March 28, 2010 Share Posted March 28, 2010 A few years back I purchased insanely expensive GL-3 rated gear oil from the Dodge dealership (Daks had the AX-15 too). :( Link to comment Share on other sites More sharing options...
Eagle Posted March 28, 2010 Share Posted March 28, 2010 But... the correct fluid is available.. and we already know that Chrysler completely blew the recommendation for the AX-15(and the AW-4). Huh? AFAIK Chrysler recommended GL-3 for the AX-15 right up until they changed to motor oil, and they did that basically because it's nearly (if not completely) impossible to find GL-3 gear lube. And what's this about the AW4? When did they ever recommend anything for that besides Dexron/Mercon? Related question (sort of): Has anyone tried that Pennzoil Synchromesh manual transmission lube in an AX-15 ... or, for that matter, in a BA 10/5? It's formulated for the NVG 3550 and 4500 trannies, but why would it not work in other manual transmissions? Link to comment Share on other sites More sharing options...
whowey Posted March 28, 2010 Share Posted March 28, 2010 But... the correct fluid is available.. and we already know that Chrysler completely blew the recommendation for the AX-15(and the AW-4). Huh? AFAIK Chrysler recommended GL-3 for the AX-15 right up until they changed to motor oil, and they did that basically because it's nearly (if not completely) impossible to find GL-3 gear lube. And what's this about the AW4? When did they ever recommend anything for that besides Dexron/Mercon? Related question (sort of): Has anyone tried that Pennzoil Synchromesh manual transmission lube in an AX-15 ... or, for that matter, in a BA 10/5? It's formulated for the NVG 3550 and 4500 trannies, but why would it not work in other manual transmissions? Chrysler recommended GL-5 lubes for the AX-15 at one point.. they later rescinded it as they didn't like replacing synchros in warranty... There are owners manuals out there with the bad recommendation in them.. I'm very surprised you never read any of the info covering that on Naxja. In Oct. 2008 Chrysler changed the recommendation for the AW-4 from Dex/Merc to ATF+4.. for ostensibly the same reason as changing the GL recommendation..They no longer wanted to purchase Dex/Merc for their service centers. Ninja Edit... Did some searching of the Naxja archives.. Found a thread from 2003... Eagle.. you posted this...May 1, 2003 3) According to DaimlerChrysler, the AX-4, AX-5 and AX-15 should use the Mopar product meeting spec MS9684, which is rated as a 75W90 GL-3 lubricant. HOWEVER, according to the engineer at Pennzoil (who claims to have all the tech bulletins from DaimlerChysler, that product should be used only in the AX-series trannies 1998 and newer,and the older ones should use 75W90 GL-5 gear lube (which is what the '94 FSM calls for. Link to comment Share on other sites More sharing options...
wyk Posted March 28, 2010 Share Posted March 28, 2010 any GL-5 rated gear oil. :thumbsup: I assume it also works ok in my axles? Oh lord, $50 a gallon for redlines gl-5. Let' seee, both axles, xfer case, tranny...sounds like almost $70 worth of fluid? Help. Link to comment Share on other sites More sharing options...
Eagle Posted March 28, 2010 Share Posted March 28, 2010 But... the correct fluid is available.. and we already know that Chrysler completely blew the recommendation for the AX-15(and the AW-4). Huh? AFAIK Chrysler recommended GL-3 for the AX-15 right up until they changed to motor oil, and they did that basically because it's nearly (if not completely) impossible to find GL-3 gear lube. And what's this about the AW4? When did they ever recommend anything for that besides Dexron/Mercon? Related question (sort of): Has anyone tried that Pennzoil Synchromesh manual transmission lube in an AX-15 ... or, for that matter, in a BA 10/5? It's formulated for the NVG 3550 and 4500 trannies, but why would it not work in other manual transmissions? Chrysler recommended GL-5 lubes for the AX-15 at one point.. they later rescinded it as they didn't like replacing synchros in warranty... There are owners manuals out there with the bad recommendation in them.. I'm very surprised you never read any of the info covering that on Naxja. In Oct. 2008 Chrysler changed the recommendation for the AW-4 from Dex/Merc to ATF+4.. for ostensibly the same reason as changing the GL recommendation..They no longer wanted to purchase Dex/Merc for their service centers. Ninja Edit... Did some searching of the Naxja archives.. Found a thread from 2003... Eagle.. you posted this...May 1, 2003 3) According to DaimlerChrysler, the AX-4, AX-5 and AX-15 should use the Mopar product meeting spec MS9684, which is rated as a 75W90 GL-3 lubricant. HOWEVER, according to the engineer at Pennzoil (who claims to have all the tech bulletins from DaimlerChysler, that product should be used only in the AX-series trannies 1998 and newer,and the older ones should use 75W90 GL-5 gear lube (which is what the '94 FSM calls for. But the question there is whether the earlier lube recommendation was incorrect, or if they changed the material used in the synchro rings in the newer transmissions. I remember that conversation with the Pennzoil engineer. That was when I called them to ask if their then-new Synchromesh gear lube was suitable for use in the AX-15. He declined to offer an opinion. He said the then-new juice was engineered for the NVG 3550/4500 family of transmissions and that he could not offer an opinion regarding its use in any other box. Link to comment Share on other sites More sharing options...
Pete M Posted March 28, 2010 Share Posted March 28, 2010 any GL-5 rated gear oil. :thumbsup: I assume it also works ok in my axles? Oh lord, $50 a gallon for redlines gl-5. Let' seee, both axles, xfer case, tranny...sounds like almost $70 worth of fluid? Help. GL-5 is the modern standard for gear oil specs/additives. If you walk into a store, everything there should rated GL-5. You don't need the fancy redline stuff, but it has apparently been known to help with problematic trannys. Simply putting in fresh fluid might help too. The transfer case takes ATF, not gear oil. Link to comment Share on other sites More sharing options...
wyk Posted March 28, 2010 Share Posted March 28, 2010 GL-5 is the modern standard for gear oil specs/additives. If you walk into a store, everything there should rated GL-5. You don't need the fancy redline stuff, but it has apparently been known to help with problematic trannys. Simply putting in fresh fluid might help too. The transfer case takes ATF, not gear oil. All clear now. Obliged. Link to comment Share on other sites More sharing options...
wyk Posted August 10, 2010 Share Posted August 10, 2010 GL-5 is the modern standard for gear oil specs/additives. If you walk into a store, everything there should rated GL-5. You don't need the fancy redline stuff, but it has apparently been known to help with problematic trannys. Simply putting in fresh fluid might help too. The transfer case takes ATF, not gear oil. All clear now. Obliged. Well, I FINALLY got around to replacing the gear oil. I put some 80-95 stuff in both the rear diff and the tranny. Since it is rarely used off-road, I didn't bother with the front diff this time. The rear diff had only a little more than a quart left in it. Someone had replaced the original bolts with torx, which made it a huge pain to remove them. What came out was pretty ugly. Also, the tranny had a torx filler cap in it which had the top of it marked "Do NOT Remove" WTH? How can you read that unless you remove it? The stuff that came out of the tranny was VERY thin, like 10-30 or so. Maybe even thinner. It was a decent color, though. There weren't many particles on the magnet of the drain plug. So that was nice to see. I am hearing a bit less noise coming from the rear axle now. Link to comment Share on other sites More sharing options...
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