3rd gear issue?

[r34 gtr]

Just wondering if anyone else with a 5spd D22 had any issues with 3rd gear? Its a little finicky in my truck. I bought it like this, and it isn't really much of a problem, but it is there. If you don't get it just right on the upshift (2-3) it will get a little um, snaggly. If you go for the 4-3 downshift, you have to rev match it just right or it will do the same thing. I am very gentle on the truck, so I don't foresee anything coming from it, but I was curious if this was a general problem with D22s or if it was just that the PO was a bit rough with it.

Are the 3rd gear syncros the same as in, say, the s-chassis transmissions? I ask because I have a menagerie of them and it would be wicked convenient.

last thing, I was going to replace the fluid in the transmission, transfer case, and front and rear differentials. Can anyone recommend any fluid? I was going to get redline or amsoil, but I am open to ideas. How much fluid and what weight would be amazing if someone more enlightened could inform me.

Sorry for all the questions! Thanks for the help Nissan Trucks Forum people!

[seang]

GL4 is popular among the truly meticulous, so I will recommend that.

I'm quite sure your transmission is an FS5W71C. I've never compared the guts to a 240's FS5W71C, though, because I never had the opportunity.

[r34 gtr]

Well, nothing wrong with being truly meticulous!

I would love to compare the guts of the two transmissions, but I have the problem of one of them being in current use on my daily driver. I would guess, having the same model #, that some basic things like syncros would likely be similar.

[seang]

Another thing you can do is replace the nylon bushing thingy on the bottom of the shifter. You would already be in that vicinity if you do this: overfill your transmission through the shifter opening. On D21 4x4's, the stock fill plug is an inch too low from the factory. It can also be overfilled by jacking the truck up on one side, or by parking on an angle and using the fill plug (I chose the shifter opening because then I don't have to worry whether or not I'm on a steep enough angle, that and I also don't have carpet in my truck covering the shifter boot screws). Anyways, it is commonplace among those who know better, and among those who have had their transmissions fail catastrophically, just ask any regular member of an offroad Nissan forum. One of our most knowledgable trucks forum members, Desert Rat, would vouch for this one. I wish he would show up to clarify whether or not the D22 had this same issue like the D21.

[r34 gtr]

Hm. I will look into replacing that shifter bushing. Guess I will pop the trim off and check the condition of the one on there this weekend when I do the fluids.

I never overfilled the transmissions in my s13s, but I guess I wasn't abusing them with 4wd action either. Thanks for the tip!

I should probably just look in my owner's manual, but the differentials use 75w-90, right? Probably a quart (or liter) each?

[seang]

The overfill thing only pertains to the 4x4 versions of the FS5W71C. 240sx and 2wd trucks do not have that issue as far as I know.

Fluid capacities for the diffs might be in the axle info sticky at the top here. Great info in that thread thanks to Desert Rat.

[RT22]

I have 3rd gear issues under perfect circumstances, up shifts fine down shifting rev matching does it, if I roll to a stop sometimes it is hard to get out of 3rd if I come to complete stop and have not taken it out of 3rd before full stop. Not sure why but shifts up great but downshifting into 3rd can be notchy but a blip of the throttle snicks right in. I think the synchro is bad but not too bad.