What happened to your Discovery 2 today?

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Originally Posted by PhilipA

Maybe you changed too late.
My D2 had 134Kk and my RRC 67Kk when changed to Transmax Z.

Transmax Z is a ZF approved fluid for 4HP22 and 24 for heavy duty use and appears on their list of approved fluids.
Castrol states running temperature reduction of up to 20C.
I have towed 1tonne over some of the roughest tracks in 40C temps and never have illuminated the over temperature light, although I once got the sensor in my RRC wet and it came on when starting LOL.

IMHO this is a testament to its suitability.
Regards PhilipA

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D2 owned from new.
Serviced first 50k at 10k intervals by LR they did the transmission at 50k - I was there and inspected the fluid - all good, not aged.
From that point in I took over servicing.

Auto transmission was serviced every major (second) service as the Turbo etc had been upgraded and I keep on top of it.

Every time was new filter and Penrite Fluid.
Transmission performed faultlessly.

Come 130k and I gave the vehicle a birthday - every fluid, coolant, Transmission, TC… you name it. This time I used Transmax Z.

Within 3,000km it started to play up, flaring, slipping and generally being a PITA!

Dropped the fluid, replaced with Penrite and it improved, but never the same.

I know it’s coincidental but it ****es me off!


One thing that makes no logic - temperature isn’t controlled by the oil Phillip, it’s controlled by the cooler. Keep it cool and you won’t have an issue.
Mines never run hot - has a bigger cooler.

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One thing that makes no logic - temperature isn’t controlled by the oil Phillip, it’s controlled by the cooler. Keep it cool and you won’t have an issue

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Actually less friction less heat.

Rick 130 has stated that TransmaxZ has excellent lubrication properties.

Sorry Rick for quoting you.
Here is Castrol MSDS

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DescriptionCastrol Transmax Z is a high quality full synthetic transmission fluid. It is particularly recommended for use in automaticand semi automatic transmissions used in buses and coaches. It may also be used in manual transmissions. As suchit is recommended for fleets employing a mixture of Voith, Renk, ZF, Allison and MB transmissions alongside theLeyland Pneumocyclic and Hydracyclic units. Extended oil drain [120.000 km] in ZF Ecomat, MB AT and Voith ATApplication
Castrol Transmax Z has proved most suitable in severe service applications where high temperatures have reduced transmission life. It hasbeen shown to reduce automatic transmission fluids temperatures by up to 20˚C in severe duty applications.Typical applications include:Heavy duty automatic transmissions with integral retardersTransmissions of vehicles used for towingTransmission retardersRacing applicationsLong drain applicationsFord A4 LD transmissions in taxis and transit vans.
Particularly recommended for use in automatic and semi-automatic transmissions used in buses and coaches.Recommended for power steering systems and manual transmission systems where DEXRON III or II fluids are specified.Very successfully used in drag racing applications in Australia, in Powerglide to Lenco transmissions, for Super Street to Top Alcoholcompetitors.

Extended drain intervals in heavy duty automatic transmissionsCity and Suburban service 100,000km or 2 yearsOn-Highway 300,000km or 2 yearsFor long drain oil applications, Castrol Labcheck or other oil and wear metal monitoring is required to ensure optimum performance anddurability.AdvantagesExcellent resistance to oxidation prolonging the life of the lubricant, offers extended drain potential and lowersoperating costs.

Enhanced protection against deposits extends transmission life.Temperature reduction in severe service improves transmission and oil service life and helps reduce fuelconsumption and emissionsOptimised frictional characteristics providing smoother gear changes and protects against wearOutstanding cold flow properties giving high protection to transmission especially at start-upPag

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Originally Posted by Markf

Finally got time to deal with the sudden dump of ATF from the gearbox. It looks like a previous owner had the same problem and replaced the rubber part of the pipe on the passenger side of the cooler but used hose clamps rather than getting it done properly. The cooler end had blown off allowing the ATF to escape.
After an extended period of wrestling and swearing I got both the pipes and fittings off and took them to a local hydraulic place to be done properly. More wrestling and swearing and they were back on.

After nearly fainting at the price of Transmax Z I got to the job of refilling it. I decided that now would be an opportune time to drain what was left and replace the filter. No bits were caught in the filter and there were no bits on the drain plug. The remains of the fluid looked and smelt like brand new ATF. Bonus.

Now the car was parked on the nature strip sloping down towards the drivers side so I couldn't fill it completely but I did get enough in to be able to turn the car around so that I could get more ATF into it. Nearly six litres of it in total. Got the car onto level ground and I reckon it's probably got about 100ml too much in it so I decided to let it stay as it was.

What a trial getting the ATF in. A 500ml pump bottle so under the car, pump like buggery, out from under the car, refill bottle and repeat. By the time that's done a few times the exhaust system is as hot as from idling and is ready and willing to burn anything that comes into contact with it - bits of me for example.
All done now and it changes as good as ever since the rebuild and is nice and smooth. And it doesn't leak.[bigsmile]

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Yeah, I used one of those bottles and even tried a 1litre sucker/filler syringe one.

Swore never again...

I use one of these now..

https://www.repco.com.au/en/tools-eq...8n2/p/A9796336

If you buy your oil in 20 litre containers..no probs.
If not, try and score clean one from somewhere and tip your 5 litre containers into it. Excess oil can be returned to the 5 litre ones after.

For a D2 auto you can count the pumps in (@110ml stroke) and then I lie down on ground at the drivers side at the side of the car ( after I've been thru the gears) and I watch the fill port as I pump the last couple of strokes. ATF pumps very easy with these and have used it also for 80w-90 full synth oil.

I bought my couple of pumps considerably cheaper than that price from my local Penrite distributor. Also haggled good prices on oil as well.( Better than car shop specials)

The spout just fits inside the fill port with a little jiggary pokey.

My eldest had a drive in the manual car. He has a full license, learned in an automatic. Only stalled twice and bunny hopped twice over 30 mins or so. Did ok.

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Originally Posted by PhilipA

Actually less friction less heat.

Rick 130 has stated that TransmaxZ has excellent lubrication properties.

Sorry Rick for quoting you.
Here is Castrol MSDS

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Yes… and you can confirm from that quote that the lubricity is different enough to change the heat profile?

The heat transfer is predominantly via the cooler, it’s not lack of friction in this case.

My arms are feeling it, them and the 24" bar had quite a work out tightening the head down, did get me to sweat.

Why am I an idiot
I noted that the manifold would comfortably clear the bonnet after my previous measurements indicated it would be close, well took pictures of the manifold when fitted to the head and it showed

Attachment 174126

NO problems

WELL, it is touch and go as I didn't take into account the tilt of the engine which when I first measured the dimensions in the vehicle of course showed this to be the case.

Attachment 174127


The manifold does sit higher when insitu in the car and may be in contact with the bonnet, but will cut back the mat and if required a vent of sorts cut into the bonnet.

Attachment 174128

Should add the Air Con unit had to have the back drivers side corner cut back to fit the manifold and could cut back more if we find it needs a fourth bolt

Attachment 174131




I made note in another thread that the FPR actually has a filter that the current FPR did not so have decided not to spend the $150-$200+ on the in head filter.

Attachment 174129

Thorough clean out of the oil cooler and associated oil parts with the O rings in the oil cooler in particular being totally flat, looked more like a rubber washer

Attachment 174130

All surfaces were cleaned crud cleaned out.




Also welcomed to my home a new to me D2a with new rear SLS bags and tyres, basically full service history (minus 2 years) and one of the last services was more than I paid for it. Newish radiator, fuel pump, steering box, FPR Injectors and loom, waterpump etc. So looking at less than a grand to get RWC and it on the road.

This is going to be a daily driver with a just moderate engine and auto upgrades, egr delete, straight through exhaust etc.

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Originally Posted by RRT

I made note in another thread that the FPR actually has a filter that the current FPR did not so have decided not to spend the $150-$200+ on the in head filter.

Attachment 174129

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The FPR is at the fuel exit of the head and its filter is to stop crud coming out of the fuel rail blocking its small discharge hole. It does nothing for the injectors.

The expenso fine (metal ?) gauze filter is at the inlet to the head to stop crud getting into the injectors.

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Originally Posted by johnp38

The FPR is at the fuel exit of the head and its filter is to stop crud coming out of the fuel rail blocking its small discharge hole. It does nothing for the injectors.

The expenso fine (metal ?) gauze filter is at the inlet to the head to stop crud getting into the injectors.

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Got up early and ordered one, will be getting fuel from country stations and jerry cans so good insurance.

Its tight! Really interesting fitting the turbo yesterday as the space (compromised by the dual air conditioning piping) sees it fit but have to 'hold' the pipes below away. One issue that I did not expect was the top oil hose from the head is about 4 cm's short so will have to pull the oil filter again and hopefully buy or if so, have to make one up but suppose lucky this is a double banjo.

You can see in the photo that DD have redirected the outlet to the intercooler which may require a bit of a fiddle but not certainly better than a loop up. You can clearly see the port for the EGT probe on the Turbo,

Attachment 174143

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Attachment 174146

The exhaust which is also supplied in the kit is angled about 45' to the drivers side which should help reducing the heat in the area where the second battery tray fits which is going to be used for the air compressor. Have a turbo mitten as well to go on to minimise the heat transfer into the engine bay along with wrapping the manifold down as far the remains of the titanium wrap allows - not going to buy more for this.

Fitting the temp sensor for the EWP and Davies Craig Low Coolant alarm into the top pipe which along with the removal of the down pipe to the thermostat was also done. Cutting the silicon pipe into sections ensuring that the pipes are orientated correctly will be finished once we reassemble the rest of the fit.

Mates coming tomorrow night to make up the Auto Trans Cooler pipes attachment which I never want to see again if they are done properly. Have already removed the pipes from the transmission and looking to cut the end and flange the metal pipes and make slightly longer replacement hoses to the P38 cooler. Hopefully will remember to journal this as the mate assures me it is not that difficult as long as you have the right crimp tool of course.

Very interesting alternative to the problematic LS conversion, wonder how he got around the ecu issues

Landrover Discovery 2 with Brunswick Diesel 6.5 V8 engine | Cars, Vans & Utes | Gumtree Australia Mandurah Area - Mandurah | 1282270944