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Phillywilly72

Member Since: 29 Apr 2024
Location: Wiltshire
Posts: 83

2011 Defender 110 Puma 2.4 DCPU Tamar Blue

MT82 notchy

Puma with 78k, all oils refreshed less than 5k miles ago. Going from 1st to 2nd the gearbox feels like it doesn’t goes smoothly into 2nd and is slightly worse when cold. It feels like it catches and makes a slight clunk. All other gears fine. Any ideas if this is something to address before anything drastic happens or just from wear and tear. Would a slightly thinner oil help?

31st May 2025 1:20pm

jim4244

Member Since: 13 Apr 2014
Location: Bedfordshire
Posts: 947

2013 Defender 90 Puma 2.2 CSW Fuji White

Hi

What oil did you use when you changed the gearbox oil?

Jim

31st May 2025 1:22pm

Phillywilly72

Member Since: 29 Apr 2024
Location: Wiltshire
Posts: 83

Edit. Castrol trans max 75w90. I can’t remember tbh, I think the manual states two types and went for the thicker of the two

31st May 2025 1:24pm

Ianh

Member Since: 17 Sep 2018
Location: Essex
Posts: 2394

I would be surprised if it was the gearbox at such low miles.. are you sure it’s not an adapter shaft or clutch issue ?

Giving Ashcroft transmissions a call to get their thoughts would be beneficial ,or message member Ashtrans on here
https://www.defender2.net/forum/member-ashtrans.html

An interesting topic on the MT82

https://www.defender2.net/forum/topic65856.html?highlight=mt82

Ps did this happen before oil change or after it ? Did you fill with a measured 2.2 litres ?

PPS Transmax Multivehicle 75w-90 is the correct oil as it's is a fully synthetic manual transmission fluid meeting API GL-4 specification

31st May 2025 1:32pm

custom90

Member Since: 21 Jan 2010
Location: South West, England.
Posts: 20861

Might pay to have a look at the gearstick lower assembly, the rubber there can disintegrate and get in the way, or the nylon ball if original can crack..
You then can get quite a weird feel gear changes, which is caused by the stick selection not the gearbox itself.

Worth checking there is no gearbox oil leak, if it’s wet near the drain or anywhere else, but I doubt that’s the case. _\Hennessey|Venom| F5/___
___\⭐️Lone|Star|State/___
____\We|Will|Win/___
____/🇬🇧🇺🇸\____
_//*⛽️🛢️⚙️🧰*\\_

31st May 2025 10:04pm

LR90XS2011

Member Since: 05 Apr 2011
Location: bickenhill
Posts: 3673

2011 Defender 90 Puma 2.4 XS CSW Galway Green

mine was poor 1-2 change when new, not sure what fixed it but its brilliant now.

New Clutch
New Adaptor Shaft (Ashcroft)
Extra locators on gear change

There is a big long thread on here somewhere about the 1-2 change being a bit rubbish DEFENDER 90 TDCI XS,

I hope everyone is well and your land rovers make you happy

1st Jun 2025 7:38am

jim4244

Member Since: 13 Apr 2014
Location: Bedfordshire
Posts: 947

Just a thought but you said that you had carried out a full fluids service?

There was no chance that you put Castrol Transmax Axle Long Life 75W-90 that is used for the diffs and transfer box in the gearbox by mistake?

Not sure that it would make that much difference, just a random thought.

Jim

1st Jun 2025 7:41am

Johan_B

Member Since: 20 Sep 2024
Location: Gothenburg
Posts: 98

2008 Defender 110 Puma 2.4 CSW Tonga Green

I have something similar for 1-2 km from cold, then it’s perfect. I can’t imagine the oil get warm that fast so I speculate if some areas of the gearbox take longer to be lubricated. If I remember correctly lubrication is by splash, so a bit random.
I too changed oil appr 10000 kms ago and at the same time the drive members in the rear. That made an improvement in overall gear shift quality. Clutch is 20000 km old so should still be fine.
I am not too concerned and think it can be further improved by elimination of slack in the drive train.

1st Jun 2025 7:56pm

custom90

Member Since: 21 Jan 2010
Location: South West, England.
Posts: 20861

Was the precise oil quantity used?

The product IanH mentioned before is what I have in mine. _\Hennessey|Venom| F5/___
___\⭐️Lone|Star|State/___
____\We|Will|Win/___
____/🇬🇧🇺🇸\____
_//*⛽️🛢️⚙️🧰*\\_

3rd Jun 2025 2:26pm

Johan_B

Member Since: 20 Sep 2024
Location: Gothenburg
Posts: 98

In my case I measured 2,2 l Transmax Multivehicle 75W-90.

3rd Jun 2025 8:31pm

keith

Member Since: 15 Aug 2012
Location: Edinburgh
Posts: 2264

custom90 wrote:
Might pay to have a look at the gearstick lower assembly, the rubber there can disintegrate and get in the way, or the nylon ball if original can crack..
You then can get quite a weird feel gear changes, which is caused by the stick selection not the gearbox itself.

Worth checking there is no gearbox oil leak, if it’s wet near the drain or anywhere else, but I doubt that’s the case.

There’s definitely something wrong if there’s NOT an oil leak 😮

3rd Jun 2025 8:56pm

custom90

Member Since: 21 Jan 2010
Location: South West, England.
Posts: 20861

Gears 1 - 2 do tend to be a bit more that way inclined, especially when cold.

What does the clutch fluid look like? It should be changed every 2 yrs presumably similar to brake fluid.
It’s the same thing, but my point is, it might have gone a bit hydroscopic and took on some water content, from that, it could affect the hydraulic action of the slave with the clutch itself.

Often it can be accidentally overlooked, it often turns off relatively quickly normally, but if it’s really black then that’s not good. _\Hennessey|Venom| F5/___
___\⭐️Lone|Star|State/___
____\We|Will|Win/___
____/🇬🇧🇺🇸\____
_//*⛽️🛢️⚙️🧰*\\_

3rd Jun 2025 9:13pm

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