Hello everyone 👋🏼

Im here again for some help from you. 

My octavia have a 200.000km and that’s the interval of change gearbox oil (i know, no officially). I have a 2 questions. 

(( Škoda Octavia 2017/18 FL 2.0 CR TDI CRMB 6q Manual )).

 

1. Oil type, about skoda-parts it is OEM (code G05 252 7A2) but like compassion can be used Castrol Syntrans Transaxle 75w-90 (code CAS TAF X75 W90). Problem with oem is the price, 60€ / 1L and we need 2.3L so real 3L package. What do you mean about this Castrol oil?

 

2. I have heard on the forums that there is a line when changing the oil, but most mechanics change this oil to the edge of the line, that seems logical to me, but I have heard that it is an insufficient amount, it needs to be filled a little more like this line. Can you maybe tell me more about this?

 

I know my english is terrible, but this forum and his users can help me all time.

bump

Use castrol, VW dont make their own oils, they are made by another manufacturer so chances are it could even be Castrol, more than likely Comma or someone like that though.

 

When replacing manual gear oil, drain from the botton, remove the fill plug and fill till it dribbles out the fill plug, no line or level, just fill. Seen as its physically not possibly to fill above the line unless really quick or having the car at a weird angle i dont know who or why someone would say that.

Edited 9 January, 20224 yr by ApertureS

45 minutes ago, ApertureS said:

Use castrol, VW dont make their own oils, they are made by another manufacturer so chances are it could even be Castrol, more than likely Comma or someone like that though.

 

When replacing manual gear oil, drain from the botton, remove the fill plug and fill till it dribbles out the fill plug, no line or level, just fill. Seen as its physically not possibly to fill above the line unless really quick or having the car at a weird angle i dont know who or why someone would say that.

 

Thank you so much!

Last question, which one of this castrol oil is “best of”?

13 minutes ago, homelessdrop said:

 

Thank you so much!

Last question, which one of this castrol oil is “best of”?

No such thing as best, use what meets the spec set out by the manufacturer and nothing else, that I guess is the best and only 

34 minutes ago, ApertureS said:

No such thing as best, use what meets the spec set out by the manufacturer and nothing else, that I guess is the best and only 

Thank you so much 😊 

On 09/01/2022 at 16:11, ApertureS said:

Use castrol, VW dont make their own oils, they are made by another manufacturer so chances are it could even be Castrol, more than likely Comma or someone like that though.

 

When replacing manual gear oil, drain from the bottom, remove the fill plug and fill till it dribbles out the fill plug, no line or level, just fill. Seen as its physically not possibly to fill above the line unless really quick or having the car at a weird angle i dont know who or why someone would say that.

I know this is an old thread but be aware of this advice, if you have certain 5 or 6 speed manual boxes - my transmission code is QVX - then this will not work, due to the angle of the gearbox/engine, its not possible to even put back in the oil that drains out...... You need to lock out the gear selector, take out a  spline bolt to drain oil missed from draining from the the main drain plug, replace the drain bolts, release gear selector lockout and fill from reverse gear switch....  If you don't lock out the gear selector & remove the bolt, the selector comes loose & you'll need to remove the gearbox, to refit the selector.

 

Skoda/VW would have filled the box long before the engine was put in the car.

 

The only other way, if this hasn't put you off, is to jack up the front of the car by more than 12 degrees, drain using the main plug, measure oil that comes out and refill that amount but you wont get all the oil out of the box this way, about 400ml will be left inside..... My car has done 130k miles, the oil that came out was jet black but no obvious metal particles.

 

Don't ask how i found all this out.......

Edited 22 August, 20241 yr by adg1

Normally, VAG use API GL4/GL4+ SAE 75W transmission oil for transverse-mounted engine's manual gearbox.

I.e., very liquid, without any digits after "W". It greatly helps in winter.

But 75W-90 also will be ok.

"Winter digit" is similar, as we see- but "summer digit" also pulls "winter digit" to this or that side of temperature. Same refers to engine oils too.

Edited 22 October, 20241 yr by indars
Additional text.

Ook, it seema that topic needs some hands on..

 

So each gearbox has a 3digit specific key after gearbox name.

E.g.

MQ350 M6F QEY - manual 6 gear FWD (in my case Superb mk3 2016 2.0 tdi 140kw)

MQ350 M6A QGN - manual 6 gear AWD (case of Superb mk3 2016 2.0 tdi 110kw 4x4)

..and so on each combination MQ200 MQ250 DQ*** etc..

 

On each car there's a sticker rear area for reserve wheel/storage box, some times if not there (for cars after 2021) it is on the service book when paper or online. PR-Number plate

 

Big POINT(!) Manual gearbox:

- initially for MQ200 MQ250 was no service recommended at all life time

- same applied for MQ350, but even so common mechanics recommend change at 100.000km, then later started a recommendation of 60.000-80.000km or 5 years. Something happen(?) still question mark.

 

Maybe because, brake fluid, Stop What?

Because it has service for 60.000km, and too less mechanics knows(out of Official Dealer and Bosch Service Centre) that when purging brake oil out with new one, has to respect the norm, plus the sequence for clutch cylinder  for manual gearbox and for DSG together with brake cylinders because it use same hydraulic system 

- after which OBD and ABS adaptation with brake and clutch

 

But what happen?

 

2015 - 2018 cars with MQ350 from factory received GL 4+ Castrol transmax V 75W80 (!)

 

In 2019 they moved officially to Shell, and most cars get 75W90, and here when people get to idea let replace gearbox oil they put 75W90 instead 75W80 for cars before 2019. Some get bag gear synchronization 2 to 3.other 5 to 6 etc..

 

So if you get the gearbox with wrong oil, e.g GL5 instead of GL4+ it seems not big deal but is huge risk to get Oxydation on it due to different metal reaction.

 

So is better to get correct original oil without any kind of extra additives unless you lost hours and days studying what and why you need and take the risk.

 

Now some brands names 75W only that's strange as old school they assumed only one type of oil is it 75w80 or 75w90 no body knows ... But Castrol say 75W80

 

 

So make sure to identify if the gearbox needs 75W80 then that one must be and nothing else. As said mostly 2015 till 2018 and some mid 2019 depends when car sells..

 

If gearbox datasheet says 75W90 then that one is, in fact it wont say 75w90 or 80 but it will have a VW part number which can be searched. This mostly after 2019.. depends when build and gearbox Key index.

Then next: gearbox differential (front) will take 75W90. 

As well as Rear Differential when 4x4 AWD will take 75W90

Plus Haldex takes special liquid.

 

So now we know there's cars taking service for manual gearbox with 3 different oils for transmission and others with 2, others with 1 type.

When dsg same apply, dsg + 75w90 differentials+ haldex if 4x4.

 

Here specific case combination: kind of 4 oil drain plugs but 3 oil type

 

Gearbox Mq350 m6a 4x4 02q-qgn
- 2.15 - 2.3l, 75w80 (castrol transmax manual v - no alternatives if you want car shifting as car not as tractor)
- API GL-4+
- vw *G 052 527 A2*
- VW G 052 171
- VW G 052 527 
- VW G 052 512 
- VW G 052 532 
- VW G 055 512 
- VW G 055 532

+

Front differential 
- 0.9l, 75w90 (original castrol transmax axle long life then Shell both are VW - alternative Ravenol LiquiMoly, Motul, search reviews FOR your car all are unique or believe in economy a bit and pick the one more accessible)
- VW G 052 145 A2
- VW G 052 539 A2
- VW G 052 911 A2

<=>

Rear differential 
- 0.93l, 75w90
- VW G 052 145 A2
- VW G 052 539 A2
- VW G 052 911 A2

+

Haldex
- 0.66 - 0.74 l, special (suggest VW only or top brands again .. as Castrol doesn't sell it to public as it is VW till 2018, then VW is Shell, public sells has Ravenol and guess LiquiMoly)
- VW G 052 175 A2
- VW G 055 175 A2
- VW G 060 175 A2

 

Now let's assume you've followed correct procedure for the oils change with all bolts seal rings cleaning and proper Nm torque all set:

- next elevate the 4wheels and slowly run all gears and 4x4 for a while , confirm no cracks etc.. there can't be any, but it will be some with gearbox selecting and haldex pushes

- next perform haldex adaptation using proper OBD diagnose

- next do adapt manual gearbox selector (fix gearbox service mode under air filter intake, then remove selector springs, then push selector.inside.the car in service mode and hold with 6mm hex, back to gearbox springs push them both on place, back inside remove 6mm holder and leave N, now releas gearbox from service mode outside, attach air intake and test drive) you should have smooth shifting as from factory and when in N there should be no bounce moving, but firmly in the middle.

 

4x4- extra adaptation for haldex via OBD

Dsg- extra adaptation via OBD

 

And extra tipp:

MQ350 doesn't love much bad shifting, that means in order shift up while driving you must push RPM bit higher to allow properly be engaged and smooth

Now ehen shifting down, if you shift down normally lower speed without braking then shift it down, if you hit the brake then wait for RPM go lower 1300, now press clutch and disengage.

 

(!) If you need to brake extremely hard, emergency brake etc, hit down both pedals together clutch + brake, stop down only then move shift selector to N or else if you continue driving.

 

Believe or not, mine Superb 2016 is 350.000km and shifts as new, 2nd owner from 163.000km .. mq350 02q-qey fwd 2.0 tdi 140kw.. it has the issue with shifting 2to3 and I was able to solve that as ler the guideline.

 

 

Attention (!)

- changing wheel size out of default factory may need proper adaptation to the wheel circumference for speed proper indicator

- installing wheel spacers, lower springs also affects all this need adaptation after

 

On 22/08/2024 at 10:33, adg1 said:

I know this is an old thread but be aware of this advice, if you have certain 5 or 6 speed manual boxes - my transmission code is QVX - then this will not work, due to the angle of the gearbox/engine, its not possible to even put back in the oil that drains out...... You need to lock out the gear selector, take out a  spline bolt to drain oil missed from draining from the the main drain plug, replace the drain bolts, release gear selector lockout and fill from reverse gear switch....  If you don't lock out the gear selector & remove the bolt, the selector comes loose & you'll need to remove the gearbox, to refit the selector.

 

Skoda/VW would have filled the box long before the engine was put in the car.

 

The only other way, if this hasn't put you off, is to jack up the front of the car by more than 12 degrees, drain using the main plug, measure oil that comes out and refill that amount but you wont get all the oil out of the box this way, about 400ml will be left inside..... My car has done 130k miles, the oil that came out was jet black but no obvious metal particles.

 

Don't ask how i found all this out.......

Can't doubt your details, but need to add full gearbox details

I mean that your gearbox is 02S-QVX 6-SPEED (MQ250) 

 

https://skoda.7zap.com/en/cz/octavia/oct/2016-753/gearbox+id-3/6+speed+manual+transmission+mq250+2016+id-300-300011/

 

As per details it takes 75W80, 1liter of G 052 527 A2

Same as MQ350 also takes 1L at Octavia, revision 

 

While, for example MQ350 at Superb will take mostly 2.15-2.3 liter, some revision 75w80, others 75w90.

 

The confusion for Octavia is it takes all you can imagine, MQ200 250 350, DQ200 250.. plus DQ381 latest )) hence each has to do a bit of datasheet research 

Any update? I think you need to look at the low temp viscosity as most of these oils don't come anywhere near to the OE.

Trying to find out which gearbox oil I need to top up octavia 3 tsi 2019.

Read this thread and it's baffled me , an idiots guide would be appreciated

I had a leak and got it fixed , mechanic told me it must've been overfilled as there was still sufficient oil in there

Currently feeling slight jerking whilst driving and exploring every avenue

4 hours ago, Brian15 said:

Trying to find out which gearbox oil I need to top up octavia 3 tsi 2019.

Read this thread and it's baffled me , an idiots guide would be appreciated

I had a leak and got it fixed , mechanic told me it must've been overfilled as there was still sufficient oil in there

Currently feeling slight jerking whilst driving and exploring every avenue

The genuine stuff which is very expensive.

The best thing that is close to spec that I've found is Renault 75w FE and a lot cheaper.

You can only drain and refill, not top up.

Edited 17 June, 202517 Jun by Blue8793841

4 hours ago, Brian15 said:

Trying to find out which gearbox oil I need to top up octavia 3 tsi 2019.

Read this thread and it's baffled me , an idiots guide would be appreciated

I had a leak and got it fixed , mechanic told me it must've been overfilled as there was still sufficient oil in there

Currently feeling slight jerking whilst driving and exploring every avenue

Jerking at low speeds when first starting the engine is normal unfortunately.

1 hour ago, Blue8793841 said:

You can only drain and refill, not top up.

What prevents topping up if the level is a bit low ?

?

Are Skoda / VW Group having a laugh or just a lost in translation with 'Check / Replenish'. ?

Is that not Check & 'Top up' if applicable?

1 hour ago, Brian15 said:

What prevents topping up if the level is a bit low ?

The level is above the Allen plug, so you cannot get it correct by removing the plug. You refill through the reverse switch on top of the box.

25 minutes ago, Blue8793841 said:

The level is above the Allen plug, so you cannot get it correct by removing the plug. You refill through the reverse switch on top of the box.

So if you refill via the reverse switch on top can you not just top up via the reverse switch on top ?

You can but you will never get it to the manufacturers level. You're supposed to lock the selector and then remove 2 drain plugs on the bottom of the box.

Is there a way of checking the level to see if it is a bit low ?

Last question , what is the gearbox capacity for a 2019 1.5 tsi ?

Edited 17 June, 202517 Jun by Brian15

Need to know reg or VIN, in order to fully identify the gearbox, the oil that goes in it, and the drain/fill info.

34 minutes ago, Breezy_Pete said:

Need to know reg or VIN, in order to fully identify the gearbox, the oil that goes in it, and the drain/fill info.

Where do i go with my vin/reg to fully identify the above ?

Tell me one or other of them.

3 hours ago, Brian15 said:

Is there a way of checking the level to see if it is a bit low ?

Last question , what is the gearbox capacity for a 2019 1.5 tsi ?

2.3 dry, 2.1 partially repaired and 1.9 normal refill.

Edited 17 June, 202517 Jun by Blue8793841

14 hours ago, Blue8793841 said:

2.3 dry, 2.1 partially repaired and 1.9 normal refill.

I had a leak repaired on it recently and I'm sure he said he drained 1.7 which was enough , could the shortfall be the cause of slight jerking ?