Replacing transmission Fliud. Any Recomendations?

[rico05]

I used Royal Purple in my old FC (85W) and it was smooth as silk. Any recomendations for a S13? My synchros are noisy as hell and the shifting is a bit notchy, so I want to replace the fluid since it is going to be April before I can get an SR and transmission.

[CraigB]

I've had good luck with Royal purple in my truck and 240...

[rico05]

Weight? SOrry, that is more what I was looking for

[180fan]

I know quite a few people who are using the redline mt90 and say it's better than they could have imagined. Best 30 bucks they've ever spent. Then again I've yet to hear from another buddy who's switched to the motul motylgear. But that's what Don from PDM recommends. So there are some more options for you.

[90fastback]

hey i use redline mtf, its awesome i dont even know what was in it before, but i can tell you it feels 10X better than it did.

[CanadianCoch]

i'd heard redline all the way, or nothing.

Dr.

[Dano]

Royal Purple is awesome, just like redline, they have only one type of manual transmission fluid...called Synchromax....

-Dan

[CraigB]

I'm running 75w90 in both...

[SRdave240]

I run Redline MT90. It isn't a miracle lube or anything but it does work better than just gear oil. lots of people also like GM Synchromesh.

As far as weights go - you meed around 80-90 weight gearoil. Use GL-4 . DO NOT USE GL-5 it will mess up your synchros.