80-90 Or 80/90-140 Lsd Or Non-lsd

[ClutchBurndout-:(]

hey guys, what oil should i put in my diff? its in an R33gtst, should i use the 80-90 or the thicker 80/90-140? (not sure if its 80-140 or 90-140) also, should i use normal diff oil as apposed to LSD oil? as i beleive the diffs are VLSD and dont necessarily needs LSD oil

any help is apreaciated

cheers

[TUF250]

be keen to get peoples thoughts on this too.

I recently serviced my gearbox and diff.

Used the nulon LSD 90 and now it has a slight noise in the diff. Might replace it with the 85w140 but keen to hear what people have to say first

[Moodles2]

80-140 i would use on a track car, 80-90 for a street/track car. Nissan specifies 80-90 for japanese conditions iirc for rear LSDs

[ClutchBurndout-:(]

80-140 i would use on a track car, 80-90 for a street/track car. Nissan specifies 80-90 for japanese conditions iirc for rear LSDs

whats iirc? and is that an lsd fluid or normal?

[Moodles2]

That's for normal LSDs (R200), you would have to look it up in the service manual for the active LSD, it probably only needs a GL-4 or GL-5 API rated fluid in there.

[ClutchBurndout-:(]

mines a VLSD, would it need special lsd oil or standard gear oil?

[S1LV3RTRACKS]

mines a VLSD, would it need special lsd oil or standard gear oil?

Flushed and filled the LSD on both my 33's a couple of days ago with Castrol SAF-XA 80w-140 Full Synthetic Limited Slip Rear Axle Oil. No complaints so far and was told it’s a good oil. I’ve heard that if you have the limited slip diff, you must put LSD oil in or it will not work correctly but you can put LSD oil in non LSDs.

[SiR_RB]

motul ff-lsd 75w-90 fully synthetic and ester base

[ClutchBurndout-:(]

hmm, ok well it seems like the oil isnt my problem, looks like i have a dodgey diff!

dammit

[joeyjoejoejuniorshabadoo]

when you buy a real diff... put in MOTUL GEAR COMPETION SAE 75W-140

[Birds]

Run everyday 80w90 in your standard R33 GTS-T diff, mineral or synthetic. This will be fine unless it sees alot of track work - in which case you might want an 85w140 or similar. Note that you do not need to use a limited slip oil in a viscous LSD as a viscous LSD uses its own unservicable fluid inside the diff centre to operate. However, using limited slip oil will not do it any harm (aside from most mineral limited slip oils being a monograde 90 - non existent viscosity range).

Only mechanical diffs requires limited slip oil with anti-chatter additives.

[ClutchBurndout-:(]

Run everyday 80w90 in your standard R33 GTS-T diff, mineral or synthetic. This will be fine unless it sees alot of track work - in which case you might want an 85w140 or similar. Note that you do not need to use a limited slip oil in a viscous LSD as a viscous LSD uses its own unservicable fluid inside the diff centre to operate. However, using limited slip oil will not do it any harm (aside from most mineral limited slip oils being a monograde 90 - non existent viscosity range).

Only mechanical diffs requires limited slip oil with anti-chatter additives.

well i have put an anti chatter aditive in and its still grinding or "chatting" when turning, i cant for the life of me figure out whats wrong with it!

[Birds]

Did you read what I wrote mate? lol

You have a viscous diff, it does not need anti chatter additive...hence when you put it in it did nothing

Could be a manner of things wrong with it...these are use once and throw away diffs. Buy another one off eBay or put in a proper LSD.

[ClutchBurndout-:(]

oh i get ya now.

yea i was hoping the fella that i bought it off was telling me the truth when he said yea its perfect in great nick, turns out it wasnt.... goto love ebay...

[Birds]

lol do not trust many second hand items on eBay unless it's a solid state business with some impeccable feedback. Great nick is also a subjective use term haha. The plus to it is, if you choose to go with a decent LSD...you can get the centre installed in your spare diff housing while your car is still on the road...that's if you kept the old diff

[08r3308]

would Castrol EPX 80W-90 be ok in r33 gtst diff or Castrol SAF-XA ?

there's also Valvoline but not much info on it HP Gear Oil 80W-90

i guess we should stick to 80w-90

sorry clutch not trying to take over your thread

[Birds]

Any 80w90 will do.

You're by going to kill your diff by trying an oil anyway. If it's not doing a good job, drain and refill!

[08r3308]

so i assume Castrol SAF-XA would be too thick in that case?

if so it answers my question and i know what to get

thank you birds

[Moodles2]

Try Castrol SAF-XA out, if the LSD starts to behave strangly and locks up around a roundabout or in carparks (I heard it happening with Redline Shockproof in the diff, not sure if it was the grade 90w-140 or the fluid itself), just dump the fluid and go a different one.