CRX Si Transmission Concern

[dhardison]

I use straight Mobil1 10W30 in my D-series trans (Quaife LSD and ATS FD). I change the fluid once a season and it always comes out nice and translucent. No issues and I've run three seasons w/o the need for a rebuild (of course now that I've made that statement it'll disintegrate at the next event ).

[darthmonkeyIT]

After some more research I am staying away from Redline MTL - lacking the additives for the LSD per Redline's comments and other users experiences. For the application Redline recommends MT-90 (of course).

I have a few quarts still of MT-90 so I leaning towards changing it out and see what it feels like with new fluid in it.

As far as the sticky shifting; I can't come up with a part that would be failing aside from something adjustable that would cause the shifting to feel sticky while sitting still with the clutch in engine on or off.

I was having difficult shifting at Grattan a few weeks back in high g-force right hand turns. My theory being some twist in the system as it loaded up under the g's. To counter this pulling back and to the right a bit made it feel smooth during the high g corners from third to fourth gear. The other times shifting from third to fourth was done in straight sections and felt fine.

[backformore]

I know nothing about nothing with the CRX so keep that in mind.

With the difference in shift effort based on corner load, I would look at the shift linkage and engine/transmission mounts. Makes me wonder if a mount is going bad and the engine/transmission is moving causing a bind in the shifter linkage.

Just my .03 (inflation).

[Bob Roth]

Used Mobil 10 x 30 for 6 years on CRX with quaif. Never changed it, never had a problem. I can recommend it.

[bonespec]

Runaway from Redline MT-90 or Honda MTL. The Honda fluid is too thin and the Redline fluid attacks the plastic bearing cages.

10w30, Pennzoil Synchromesh, Torco MTF, Torco RTF, Amsoil, in that order from cheapest to most expensive.

Will you be at IT Fest next weekend? I hope to make it up Saturday night but if it is hot I'll sneak in Sunday morning.

I also plan on attending the NASA Nats in September to help out Sam Myers and others. I saved Colin Brotha's weekend last year by bring a shifter fork assembly with me and installing it Sat. night so he could race on Sunday.

[darthmonkeyIT]

Runaway from Redline MT-90 or Honda MTL. The Honda fluid is too thin and the Redline fluid attacks the plastic bearing cages.

10w30, Pennzoil Synchromesh, Torco MTF, Torco RTF, Amsoil, in that order from cheapest to most expensive.

Will you be at IT Fest next weekend? I hope to make it up Saturday night but if it is hot I'll sneak in Sunday morning.

I also plan on attending the NASA Nats in September to help out Sam Myers and others. I saved Colin Brotha's weekend last year by bring a shifter fork assembly with me and installing it Sat. night so he could race on Sunday.

Thanks for the info! I will look into those fluids.

I have had Redline MT-90 in there for almost a year and a half. Curious how long does it take for the bearing cages to fail in MT-90 if they are plastic? Seems like it would have already failed by now.

Ya I will be at ITfest. Probably headed down Friday afternoon to set up.

[mossaidis]

When you take apart your tranny, you will find plastic shavings in your oil passages.

[Greg Amy]

Used Mobil 10 x 30 for 6 years on CRX with quaif. Never changed it, never had a problem.

10w30, Pennzoil Synchromesh, Torco MTF, Torco RTF, Amsoil, in that order from cheapest to most expensive.

Does the Honda trans need an EP additive with Mobil 1 10w30? What about if it has a clutch-type diff? And is Syncromexh any better (Never heard of Torco)?

Looking to install the B-series trans into the Integra this week, trying to decide what to use. I've been using Honda MTL. - GA

[bonespec]

MTL, pisswater thin, doesn't hold up very well.

What fluid does the diff maker suggest?

5w30 Synchromesh + 1/3 tube of Posi additive is what I used with my Kaaz, JBH also used it in Pebble. IMHO it would bee too thin due to the heat you will be seeing.

I've wanted to try 15w40 for diesels with their extra additives before it is phased out as well.

tGA, these are simple creatures. For what you'd pay for Torco RTF ($21/quart) you could use 3x Synchromesh ($7/quart) or 8x 10w30 ($2.50/quart).