Changing gearbox oil good or bad idea?

[andrewc2102]

As above really I see lots of different opinions, mine can be abit dodgy from the top of 2nd into 3rd although not very often I think I want to change it before doing a track day as its not exactly expensive have many people done this and had it made a difference or is it asking for trouble?

 

[Diagro]

Yea worth while.
mine used to whine in 2nd, changed oil and been fine since.

 

[Fletcher]

Why would it be asking for trouble?

Well worth doing IMO.

 

[DaveDreads]

Mine gets regularly changed, I have this really cool feature where the oil slowly weeps out of the selector shaft seal,
so every couple of months I top it up, pretty sure it's all fresh oil in there by now.

 

[PP200t]

I know there's a guide, but is it difficult to do? Think like a mechanical idiot with basic tools, now answer the question. Lol

 

[Mini182]

Not difficult to do, just make sure you undo the filler plug first just in case you drain all your oil out then can't undo it to fill it back up

 

[Cupman29]

Why would it be asking for trouble?

Well worth doing IMO.

Was thinking this myself.

 

[Diagro]

Easy to do.

1. Remove under tray
2. USE a sump plug tool to remove the plug on bottom of gearbox... over a bucket.
3. Let it drain
4. Undo the wing bolt on front of gearbox.. you may need to remove air filter to access it.
5. Put plug back In bottom of gearbox with a new washer.
6. Using a 10 mm pipe, slide an Ince into hole on front of gearbox.
7. U seeing a funnel at end of pipe, pour 3L of fresh gearbox oil into the gearbox.
8. Remove pipe and put wing bolt back in place.
9. Refit air box.

 

[Gandi69]

its a really easy gearbox to change the oil on as the filler hole is also the level hole!

 

[JamesBryan]

It stinks as well!

You do get used to it though.

 

[Gandi69]

depends which brand you use, some stuff absolutely stinks which I believe is the friction modifier added to the oil. The millers 75w80 I use doesnt actually smell too bad compared to some. Get it on you clothes however and the smell doesnt come out

 

[Goodj]

Changing gear oil will help with noises, but not got graunching gears
It is known

 

[JamesBryan]

depends which brand you use, some stuff absolutely stinks which I believe is the friction modifier added to the oil. The millers 75w80 I use doesnt actually smell too bad compared to some. Get it on you clothes however and the smell doesnt come out

The Elf stuff is what I've used.

 

[Gandi69]

How much was that for 3l? Think I got the millers for about 24 quid delivered for 5l of it which was a great deal as it's usually silly money

 

[-Jamie-]

It stinks as well!

You do get used to it though.

Transimission and Diff oil are one of the worst smelling fluids you can get in a car LOL

Cats piss

 

[andrewc2102]

I wondered whether it was a bad idea as I have heard that some manufacturers recommend never changing it and it can actually do more harm that good doing so. As so many of you have had success in doing it I think I might as well.

 

[Gandi69]

remember changing a clutch on my mates old beater of a 1.1 saxo and my mate "somehow" got a shoe full of 100k mile gear box oil ha

 

[JamesBryan]

How much was that for 3l? Think I got the millers for about 24 quid delivered for 5l of it which was a great deal as it's usually silly money

About £10 a litre I think.

 

[Carlv8415]

It stinks as well!

You do get used to it though.

This is a lie...... [emoji23]

You never get use to the smell. Accidentally led in some and even after washing my hoody near 10 times it still smelt. It is a horrible smell ......

 

[Diagro]

I checked to see if i had a full gearbox as i have selector leak... I forgot i filled it when on a hill so it took 3.5L... I now have the best part of 400ML on my drive -.-

 

[andrewc2102]

Just went to the local motor factors to get the oil, they did it of the reg and it came up with 75w80 so I thought fine, got home and found its bloody mineral oil!. What is the actual spec from Renault I assume mineral oil is not it!

 

[andrewc2102]

Can anyone confirm that the mineral oil is wrong? Also the oil is GL-4 whereas the manual states GL-5, except the manual doesn't cover the 2.0! This is a bit of a minefield.

 

[banderson]

I'm pretty sure the Renault stuff is GL-4 mate.

 

[banderson]

My Renault do 5 litres for £35. When I was looking around it was near £10 a litre for other brands so thought, for £5 more I'd rather buy the proper stuff and have spare

 

[andrewc2102]

Is it mineral or synthetic?

 

[ADS_V6]

http://www.ebay.co.uk/itm/Elf-Trans...003?pt=LH_DefaultDomain_3&hash=item2348a77b5b

 

[andrewc2102]

Still doesn't say whether its synthetic I wanted to do it this weekend ideally so eBay isn't going to work.

 

[JamesBryan]

It's synthetic and API GL4+ spec

 

[ADS_V6]

i had mine changed with the stuff renault use which is what i linked above,gears are much smoother now etc,ring and pay for next day delivery if its urgent

 

[andrewc2102]

So mineral is not the right stuff I will have to tale it back then and see if they have synthetic

 

[andrewc2102]

It's synthetic and API GL4+ spec

For reference for anyone who ever looks at this thread I rang up Renault to be sure and this guy has it right. 75W-80 synthetic and GL4+.

 

[Gandi69]

I ran mine on total bv which is mineral for a good while and had no problems. Use millers fully synth now though

 

[TarkMalbot]

I bought this:

http://pages.ebay.com/link/?nav=item.view&alt=web&id=151542791003

 

[ksixx]

incase anyone stumbles on to this page when looking to do a Gearbox oil change and Find the right oil like myself it's all below.

For reference for anyone who ever looks at this thread I rang up Renault to be sure and this guy has it right. 75W-80 synthetic and GL4+.

Easy to do.

1. Remove under tray
2. USE a sump plug tool to remove the plug on bottom of gearbox... over a bucket.
3. Let it drain
4. Undo the wing bolt on front of gearbox.. you may need to remove air filter to access it.
5. Put plug back In bottom of gearbox with a new washer.
6. Using a 10 mm pipe, slide an Ince into hole on front of gearbox.
7. U seeing a funnel at end of pipe, pour 3L of fresh gearbox oil into the gearbox.
8. Remove pipe and put wing bolt back in place.
9. Refit air box.

I've gone for ;

Elf Tranself NFP 75W-80 Transmission Fluid​

eBay

Opieoils

RPD

​

 

[Krarl]

JC5 box Oil is ELF NFJ not NFP

 

[Robbie Corbett]

JC5 box Oil is ELF NFJ not NFP

Fecker, had to go out to the garage to check what I used at the weekend, couldn't see the front in the only pic I had.

It was NFJ do you happen to know what the difference is?

 

[Krarl]

Fecker, had to go out to the garage to check what I used at the weekend, couldn't see the front in the only pic I had.

View attachment 1516482

It was NFJ do you happen to know what the difference is?

NFP is slightly thinner, they're both GL4 iirc so shouldn't be too much of an issue but the PK4 boxes had issues with NFJ so they made NFP a bit thinner so bearings and diffs didn't wear out as much

 

[Robbie Corbett]

Shame Clios have never come up on any pub quiz ever because that would be your round.

 

[Krarl]

Font of complete utter shite knowledge 😂 😂

 

[Bankrupt_drunk]

Fecker, had to go out to the garage to check what I used at the weekend, couldn't see the front in the only pic I had.

View attachment 1516482

It was NFJ do you happen to know what the difference is?

Nice pump. Looks like it'd make the job easier.