GL4 Tranny Fluid

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I've been using SF with GREAT success, but alas, there won't be more soon. Does Schaeffer offer GL4? I believe Amsoil and Redline do. Thanks!
 
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GL4 for a manual tranny? You mentioned Redline. I have Redline MT90 in my manual tranny (which requires a GL4). My car didn`t like RP Max Gear whatsoever. Made my tranny loud,raspy,and notchy. MT90 is awesome stuff! What`s everyone`s opinions on who makes the best GL4 manual tranny gear oil?
 
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I have to second the poor review for Max-Gear. I put it in my 1999 Nissan Frontier two weeks ago, and I have been very disappointed. My Nissan requires GL-4 75W-90. I am currently waiting for my Amsoil MTG to arrive.
 
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Let me know how the Amsoil gear oil performs. I`ve always been curious about Amsoil products. Another thing the RP did is that it made mt throwout bearing whine.
 
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Why wont there be anymore GL4? I dont see it disappearing anytime soon. I too use the MT90 in my manual and the shifting improved a great deal...no notchy shifts, smooth like butter...generally, everything about it feels better. I replaced it before 10K miles on a brand new vechicle and fell that if I would have known the improvement it would have made I would have done it sooner.
 
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Quote:
Let me know how the Amsoil gear oil performs. I`ve always been curious about Amsoil products. Another thing the RP did is that it made mt throwout bearing whine.
Another thing RP did is that it made *my* throwout bearing whine. Sorry about the typo.
 
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I use Redline in my Honda, MTL with some MT-90. Royal Purple was ok in my old Audi. Of course, the original fluid was almost 20 years old w/180k. I am also interested in AMSoil, but got a closeout deal on my 2nd fill of Redline and still have a 1/2q leftover, so I'll probally use it again.
 
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I put the Amsoil in a couple days ago. Pretty much all the problems I had with notchy shifts and cold performance seem to be gone. After comparing the spec sheets, I assume the main difference is the much thinner viscosity of the Amsoil compared to RP. Also, the Amsoil doesn't have the friction modifiers of the RP.
 
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