Outer Limits 4x4 Board

Hi, I have a 1998 SWB GQ (the last of the shape made here in NZ) it has only 91,000kms on it and I am having difficulty with getting it into first gear once stopped, it goes in but takes a lot more effort than my last few Toyota's? Sometimes you really have to nudge it hard. Are the GQ 5 speeds notoriously notchy or should it be smooth as a Hilux/Prado?Landcruiser I have previously owned?

Thanks

change the oil and put some nulon gear additive to it.

Some people have changed to synthetic to help

TOM

Thanks for that, does Nulon actually work? I have often wondered about putting it in. Is is a hard task changing oil in the TD42 and do you know the gearbox capacity as I don't have a manual as yet. Thanks.

Mate not sure about capacity, but my GQ is very notchy when trying to put it in first gear, its been the same since new so nothing to worry about, I have been running Nulon in mine and it has made a difference for sure, but I still find mine notchy sometimes.

gearbox oil capacity is 4.8 litres

transfer case capacity is 2.2 litres.

Its quite dead easy.

Right under centre of gearbox is the drainage plug which is undone with a 1/2 inch ratchet (square)

the filler is on the drivers side with a simliar plug to the drainage plug.

The drainage plug has a magnet on it so check it or shavings or metal to give you some idea of the gearbox's condition.

To fill it up. you'll need a pump of some kind..

I recommend a 500ml hand pump which is filled first and then pumped thru a tube- also good for diff oils as well

TOM

I just replaced my gearbox oil in the gq the other day with some castrol epx 80/90 that was according to the manual right.
I even added some nulon stuff but it is just so much more notchy now!

I wish I new what oil was in it before cause it was sweet and smooth as.

Any recommendations from people as to what is the best oil for the gearbox??? Castrol 80/90 (in my case anyway) is no good at all.


cheers
Brian

mobil 424 fluid will fix syncro problems

fatassgq wrote:I just replaced my gearbox oil in the gq the other day with some castrol epx 80/90 that was according to the manual right.
I even added some nulon stuff but it is just so much more notchy now!

I wish I new what oil was in it before cause it was sweet and smooth as.

Any recommendations from people as to what is the best oil for the gearbox??? Castrol 80/90 (in my case anyway) is no good at all.


cheers
Brian

You'd be surprised what an oil change can do. mine used to pop out of third on de-acceleration which i thought was a synchro problem. i did my routine oil change and it hasnt popped out since. and that was over a 1000k ago!

Hi.

The redline oil have solved many gear problem with notchy gearbox.
http://www.redlineoil.com/

Popular in Nissan, Toyota and Mazda manual transmissions. I have MT90-75W90 GL-4 Gear Oil. Provides excellent protection of Gears and synchronizers and its balanced slipperiness provides a perfect coefficient of friction, allowing easier shifting.
You should not add some nulon stuff in the gearbox if it is notchy. The oil should not be to slipperi.
It has to do with the synchronizers.
This data I heard from my Nissan workshop.



Regards SL

L-Stefan wrote: Hi.

The redline oil have solved many gear problem with notchy gearbox.
http://www.redlineoil.com/

Popular in Nissan, Toyota and Mazda manual transmissions. I have MT90-75W90 GL-4 Gear Oil. Provides excellent protection of Gears and synchronizers and its balanced slipperiness provides a perfect coefficient of friction, allowing easier shifting.
You should not add some nulon stuff in the gearbox if it is notchy. The oil should not be to slipperi.
It has to do with the synchronizers.
This data I heard from my Nissan workshop.

I've just put the mt90 in my 90 swb, i'll let u know how it goes....

Mine does the same thing, when I go into 3rd and then 1st its nice and smooth. I now do that in my girlfriend's lancer too . Force of habit.
I will try a different oil with my next change too.

ive found in my '88 shorty double clutching or "rev matchin" the best way, give the throtle a quick squirt and as the rev's drop it slides into gear quite easy...

i'm sure there's many reasons not to do it this way (mostly to do with clutches <--- feel free to abuse me on this stuff) but from cruising around in my old datsun 1600 at mid to high rev's its the only way it would smoothly change down coming into a corner

Cheers

nothin wrong with dbl clutching and as for rev maching how do you think racing drivers get such quick gear changes, i do it all the time, practicd in the work cars cos if you miss it isnt good for the the gear box

first drive with mt90, the gearbox is free shifting and first gear only occasionally offers trouble.... it was worth every cent

Camshaft1 wrote:You'd be surprised what an oil change can do. mine used to pop out of third on de-acceleration which i thought was a synchro problem. i did my routine oil change and it hasnt popped out since. and that was over a 1000k ago!

When I did my last one 6 months ago I pulled a 90mm diameter mangled syncro retaining circlip out through the drain hole, that's got to be a plus in reliability stakes, though it does crunch going into 5th sometimes without it, I may have trouble bending it back to the right shape to poke back in the filling hole

Mine was very notchy particularly when cold.
I put Castrol VMX 80 and half a litre of Moreys oil stabiliser and its a lot better now. Still feels like a truck box but at least it shifts positively now.

I changed the box oil and it's noticably smoother, still a little hard to push into 1st on the very odd occassion, but did 1000kms in the weekend and all seems good, still think I add some Nulon and give it a go. Thanks for all your replys.

Very normal... esp on series 1 GQ boxes. Just touch into 2nd before pushing into 1st when cold.

Bazzle

Hi

If you have Redline oil you should not add some nulon in the box.
Synchronizers should not have to slippery oil.
A little friction between the synchronizers you should have, so the gear shifting goes smooth.
Bearings and adder stuff in the box sure love nulon,
But if you have a notchy box the nulon can get the box notchyer.
My experience, almost every oil in the market is so god that the nulon is not necessary.
I have always used full synthetic oil to all my car, engine, transmission and gearbox and never have any problem. Mobil and Redlline oil.
That are different views on what is the right thing about the oil, this is my.
Maybe not right but is my opinion.

My notchy gearbox solved with Redline oil MT90
Patrol Y60 1994 RD2,8TD

Best regards Stefan

i`ve just lifted my swb gq 2" with old man emu shox and a gearbox spacer type kit from my local 4x4 shop and for some reason it seems to shift smoother, can anyone out there give me a technical reason why?

I think you will find that it just feels a little different cause you have less stick coming thru the floor. Like a shorter shift but not really. Noticed the same thing with my old cruiser.

Just to bump this up . . . . .

I recently replaced the oil in my gearbox. (1992 EFI LWB 5 speed GQ)

Mainly, as going from 1st to 2nd it was quite notchy. And going into 1st from neutral at a stand still was also notchy.

It was more noticeable when the car was cold.

So I changed the oil, and thinking I would be clever, I added the Nulon additive (before reading this thread ), and now the gear changes are WAY worse

I now have to change the oil AGAIN ?

So, this Redline stuff is proven ? Any 'proven' winners in the oil stakes ? Asking as some of this stuff can be quite expensive

my 2c, 89 diesel gq wagon........

yes oil make s abig difference but not sure which i have now........

mine had been notchy for 12 months from when i bought it getting gradually worse....myself being lazt checked levels but didnt replace oil unitl the other day when dog teeth were found in oil that was way to thinck as to quieten things down possibly when i bought.....

random peiods of notchy sometime no selection at all and in tight 4wd situations.....

ended up getting a 2nd hand box as it was to $$ to pull apart and start rebuilding (From fester @ all 4x4 parts minden) good price and good late model box...........

costly mistake for myself being lazy and not getting new oil first up of good quality or just an existing prob disquised who knows???

i always assumed clutch but enquired about box to those in the supposed know....... but custom offroad actually had a decent look and while what they found wasnt exactly what i wanted to hear-> i can drive it now....

new box still notchy but the sort of good healthy notch which makes you relise your driving a truck not a lancer

Shorty40 wrote:Just to bump this up . . . . .



So I changed the oil, and thinking I would be clever, I added the Nulon additive (before reading this thread ), and now the gear changes are WAY worse

I now have to change the oil AGAIN ?

So, this Redline stuff is proven ? Any 'proven' winners in the oil stakes ? Asking as some of this stuff can be quite expensive

i only used the nulon stuff when my gearbox was very very notchy. only helped a slight bit and has been okay so far

Drive an Audi and you will find out about notchy gearboxes

blkmav wrote:Drive an Audi and you will find out about notchy gearboxes

Drive my POS and you will find out about notchy. Actualy I think mine is just stuffed.

G'day. I found my box hard to get into first sometimes. So i changed the oil one day at work. Put mobil 424 in it and it has improved heaps. Still ahve trouble every now and agian but thats just the box's. Run mobil GXA-80 in the transfer.

GQ wrote:

Shorty40 wrote:Just to bump this up . . . . .



So I changed the oil, and thinking I would be clever, I added the Nulon additive (before reading this thread ), and now the gear changes are WAY worse

I now have to change the oil AGAIN ?

So, this Redline stuff is proven ? Any 'proven' winners in the oil stakes ? Asking as some of this stuff can be quite expensive

i only used the nulon stuff when my gearbox was very very notchy. only helped a slight bit and has been okay so far

Yeah, I have heard different stories from different people Some say the additves make it beter, others say it makes it worse. Unfortunately for me, I found mine became worse

Im just hoping it is somehow 'additive' related and not a farked gearbox

We'll see what some fresh oil does Im still a bit hesitant to try the Redline stuff, at over $100 its almost halfway towards a second hand box

I was running lubrimax sythetic and replaced it with the redline - made stuff all difference BUT replacing the original whatever was in it to the lubrimax made the world of difference.

Trying to get it to shift even better was an expensive exercise but somethings you just have to try.

i use castrol multitrax, fixes shifts.Tried vmx80 and was no good as posted