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john01473

Discovery 1 - 300 TDI - oil changes

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My Discovery 1 - 300 TDI has done 126,000 miles - I am planning to service it - from previous posts I have info on servicing the engine.

I am not sure when I should change the other oils - i.e. gearbox, diff etc.

Have looked in manual and cannot see the info.

Please help.

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this is what i try to do...

Engine oil and filter every 4k... but sometimes ends up being nearer 5k..

Gearbox oil, every 8k, as i do it with every second engine oil change

transfer box, every 12k

axles, every 12-15k...

my Disco is getting on for 150k, with 50k of those done by me in the last 28 months.... :rolleyes:

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this is what i try to do...

Engine oil and filter every 4k... but sometimes ends up being nearer 5k..

Gearbox oil, every 8k, as i do it with every second engine oil change

transfer box, every 12k

axles, every 12-15k...

my Disco is getting on for 150k, with 50k of those done by me in the last 28 months.... :rolleyes:

Thanks mate for the info -

I plan to change all the oils as I am not sure when they were last changed – at least it would give me a starting point.

Any idea what oils and quantities I need for complete changes?

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Thanks mate for the info -

I plan to change all the oils as I am not sure when they were last changed – at least it would give me a starting point.

Any idea what oils and quantities I need for complete changes?

if you've recently bought the truck then changing them all is a good idea...

right, all these quantities are from memory...

Engine - 6.5 litres of good quality 15/40 mineral or semi synthetic oil

Manual Gearbox - 2.5 litres of ATF Dextron 2, or MTF 94.

Transfer box - 3 litres of EP 80w90

Axles - 2 litres of EP 80w90

Power steering - also uses ATF, but not sure on quantity

Clutch - uses brake fluid

Swivel housings - one sachet of graphite grease in each...

if anyone has more accurate quantities please feel free to advise...

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Capacities as per LR manual - may be of interest to some :

Engine 5.8L + O.85 extra if filtr changed ; (15W/40)

Manual Gearbox : 2.67 L . ( ATF Dexron IID ) *

Transfer Box : 2.3 L. ( 80/90 EP )

Front/Rear Axle : 1.7 L each . ( 80/90 EP )

Pwr steering box & reservoir : 3.4 L . ( ATF Dexron IID )

Swivel pin Housing : 0.35 L each side . ( 80/90 EP )

Cooling system : 11.5 L .

Washer bottle : 7L .

Fuel tank usable fuel : 89L .

* The manual doesn't mention MTF 94 but when I had the gearbox out of a TD4 last year and asked the main dlr for the proper oil to refill it with that's what I was given .

When I got my first 300 Tdi a few years ago I used the oils supplied by Difflock in gearbox/transfer box/swivels/front and rear axles .

Having read various articles over the years of how oils are developed for specific purposes I couldn't see any sense in using ATF in a manual gearbox as the lubricating requirements would be very different . One article suggested that LR recommended ATF when they found that the 'proper' gear oil gave very poor changes especially when cold . It was also suggested that this was why so many gearboxes failed .

Difflock recommend changing their oils every 48K IIRC . The manual box certainly felt better and the Disco is still going strong for a family member who now drives it .

As regards the swivel housings I discovered that the last of the Tdi's had no drain plug on the swivels so you had to use grease .( I spent a while looking for a drain plug on a 98 Tdi )

The grease was introduced by LR apparently to solve the problem of leaking swivel seals - fill with grease and forget .

I also read that owners who are into serious off roading would change the swivel oil after an outing if water had gotten in - if you have grease you don't have this option .

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... and modern swivels only have a filler plug, no level or drain plugs. (The tea lady strikes again, or maybe the bean counters in this case). So if you get water in your grease you have to disassemble the whole sheboodle to get it out.

The reason your manual doesn't mention MTF94 was that it was introduced in 1997 for the Freelander and then someone thought it would be a good idea to use it in the R380 and LT77. There was a Tech Bulletin in that year about it. The TD5 era manuals do specify MTF94. This oil was/is also used by Honda and lately by Hyundai; I think LR got the idea from Honda.

Here in SA I got 20l from Caltex, but they normally deny all knowledge of it. I think my can was snaffled from an order that was supposed to go to LR in Pretoria where they were assembling Defenders at the time. But I have heard you can buy it from Hyundai dealers if you like. I have now run out of MTF94 and have swapped to Redline MTL which gives a better gear change and supposedly never needs to be changed.

Some people have success with Dexron III fully synthetic ATF. But anything is better than standard red Dexron II which will encourage wear as it is not designed for helical gears at all and is actually too 'slippery' for the synchros to work properly.

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The main dlr here will supply any amount of it (MTF 94 )but like the 'pink' antifreeze it's very expensive . However it would appear to be far more suited to the job than ATF . I have used the Difflock product ( Evo 1& 2 etc ) in 2 Disco's and was happy enough with it - but it is also fairly expensive .

Will have to look up the Redline product - never heard of it in this neck of that woods but that doesn't surprise me . The factors tend to be very conservative and stock only what's been around for a long time . If you have the details they will sometimes chase up a product for you - but not always .

Is Redline the name of a company ?

I presumed that MTF stood for Manual Transmission Fluid -

MTL - Manual Transmission Liquid ;)

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They are in California. http://www.redlineoil.com/

All their oils are polyolefin Category 5 which makes them expensive.

thanks to all for info and advice,

i have been to the dealer today and got all the oils filters etc

- plan to carry out the work on Sunday.

cheers

Big John

:rolleyes::rolleyes::rolleyes:

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