Correct Gearbox Oil ?

[fastcar]

I am a little confused which oil is correct or Best for my 1998 1.8vvc

Even the parts shop checked computer and it gave two completely different types of oil as correct
However I have also read that some boxes don't like fully synthetic oil

Any ideas please ?

[Rob Bell]

MTF-94 gear box oil is what you need for the PG1 gearbox

[Helsbyman]

Don't think you can get mtf-94 as it has been re named
I used fully synthetic in my box which was put in 7 yrs ago and all is O K bye the bye gear box oil is a for live item I found out so no need to change it

[Geoff.F]

Texaco MTF 94 is readily available. Google it for a supplier.

[ArntyR]

ANY MTF-94 will suffice; I use Carplan and Land Rover do an MTF-94 that I've also used.
It's a type not a brand. imo gearbox temps don't get high enough for synth. need (temp. degradation)...

[talkingcars]

.....gear box oil is a for live item I found out so no need to change it

It does deteriorate over time, IIRC MGR went for a 90k change.

[ArntyR]

'...filled for life...' has fairly recently been introduced to us by the leasehold/temporary ownership sales fraternity.

Imo it's an unsavoury selling point; merely a modern 'economic' justification to favour a particular brand irrespective of the long-term (beyond warranty) consequences.

(Changing gear oil is a low-cost d-i-y job that I do every couple of years as part of car-ownership. I've changed gear and engine oils after the first few thousand miles with my new cars, too...a 'no-brainer' imo. I feel that regular fluid flushes can only help to preserve the car beyond 'warranty' since motoring fluids will always degrade and/or need refreshing in hostile engine environments.)

[Geoff.F]

Neither Carplan or Land-Rover are oil Companies therefore you do not know who supplied the Container or the Oil in it.
Our Cars are maintained using ONLY Original Parts and oil from Reputeable Oil Companies. Perhaps not the cheapest route but the more reliable and in the long run, the least expensive.
It is Serviced by a chosen Dealership every 12 Months to the Original Schedule with oil yearly, brake fluid every 2 years and coolant and CVT Fluid at 5 years. Additional work was a replacement head gasket and steel head dowels when having the oil rail updated.
I still will do running repairs and replacement but will willingly let somebody else do the routine.
Geoff F.

[Helsbyman]

.....gear box oil is a for live item I found out so no need to change it

It does deteriorate over time, IIRC MGR went for a 90k change.

Thanks for that. Given I changed mine at 30k and have now done 68k by the time mine has done another 50k the car or my self will be dead

[RobboMC]

The local Penrite people explained to me that the critical part of MTF-94 is the viscosity.
If it's too high ( thick ) then you have trouble shifting, especially when cold, if it's too low ( thin )
then that's not good either.

The ONLY oil they will place the MTF-94 spec on is their 75W-80 semi synthetic gear oil with a viscosity of 56 cSt @ 40 deg C.
They have plenty of 'better' synthetic oils, but none have this viscosity.

The spec for Texaco MTF 94 is 53 cSt; taken from here:
https://www.cepsa.com/stfls/CepsaCom/Lu ... F%2094.pdf

I have Penrite 75w-80 in my new gearbox and it is excellent.

[gileslewis]

Hi all

Interesting, I have ordered from ebay...
http://www.ebay.co.uk/itm/111648896111
To top-up with, as I have a drip from one of the driveshaft seals

And I was in the 'discount motor center' chatting with them, and his system was saying MUMTF PLUS 75-80 (as MUMTF 75-80 was discontinued)
This tallies with the above info regarding viscosity and the important numbers 75/80

Is the differential and diff oil separate from the gear box? As the drive shafts look to come out of the gear box?
ANy one any experience of changing the oil seals from gear box to drive shaft?

Cheers
Giles

[Rob Bell]

I've not had the "pleasure" of changing those oil seals, but I can confirm that the diff sits in the same bath of oil as the gearbox gears.

[RobboMC]

I had a small 'incident' last weekend with my gearbox. Arrived home to find a trail of oil all the way up the road, into my drive and straight to the back of the F. "What a disaster" I thought. Further inspection revealed the leak was very sporadic, and sometimes very, very fast. Not a shaft seal I thought, more likely a hole.

Turned out he filler plug was gone, missing - disappeared completely.

So when you refill your gearbox make sure you tighten the filler plug up to the correct torque of 35Nm.

I can assure you they are not self tightening. I was lucky, damn lucky; it fell out around 500 yards from home.
In that short distance I lost around 1-1/2 litres of MTF94.

Much further and I would have had a dry gearbox.