fwiw...
A.   Ken at German Transaxle told me a Redline Rep told him  the
reformulated thing.
  What's actually true appears elusive.

B. German Transaxle swears by UltraGuard full Synthetic gear oil.
this one...
https://www.bgprod.com/catalog/drive-line/bg-ultra-guard-full-synthetic-gear-lubricant/

I like it just fine in a Vanagon transaxle.  Expensive ....$ 12 to 15
per qt. perhaps.

I also like to add to 'lesser' gear oils ..Prolong Transmission Oil
Additive .

Scott

On 3/14/2016 5:04 PM, bernie wrote:
> My understanding is that VW required a GL 4 80W90 in there and that is what
> I put in. What's good enough for VW is good enough for me. I am very
> interested as to what others say. I hear so many conflicting things about
> MT 90 I wish all this could get clarified.
>
> Bernie
> Vancouver BC
>
> On Mon, Mar 14, 2016 at 5:32 PM, John Rodgers <jrodgers113@gmail.com> wrote:
>
>> I have been using Redline MT90 in my manual tranny forever. Now I  hear it
>> is not the same any more and shouldn't use it. Yet GoWesty REQUIRES its use
>> in order for theit tranny warranty to be valid. I'm getting a new
>> (overhauled) tranny and sure want to lube it proper!
>>
>> What's the deal?
>>
>> John
>>