Member Since: 29 May 2007
Location: Dundee, Scotland
Posts: 20841
Heavy load is defined by ZF as "continuos" high speed driving above 90mph (IIRC) or lots of towing. Essentially, anything that gets the gearbox oil temps higher than normal (60-70 degrees) for a period of time
I dont see the gearbox being worked hard at 70mph on the motorway My D3 Build Thread
Member Since: 05 Feb 2006
Location: ¯\_(ツ)_/¯
Posts: 17932
The temps are still ok at values higher than that, just in case anyone is concerned. Indeed, when the thermostat opens the oil passes through a heat exchanger that will be running at whatever temperature the engine coolant is at.
Land Rover - Turning Drivers into Mechanics Since 1948
Member Since: 05 Feb 2006
Location: ¯\_(ツ)_/¯
Posts: 17932
In reply to a question about which transmission fluids can be used in the ZF8 - I would say that any ATF that specifically claims to meet the standard required for the ZF8 will work just fine.
It certainly does not have to be ZF Lifeguard 8 or Lifeguard 8 with a Land Rover sticker on the side (LR023289), so just buy the cheapest one you fancy. I only used the fluid I did because it came up cheap on eBay - I would not buy it at normal retail price.
Change early, change often.
Land Rover - Turning Drivers into Mechanics Since 1948
Clock/ SNOTM /3Flash / 4x4Info /BT Update /Service Reset/Error Codes / Gearbox Reset See It Here
15th Feb 2016 6:45 pm
lynalldiscovery
Member Since: 22 Dec 2009
Location: Maidstone
Posts: 7274
This is excatly what I have done on every auto boxed car I have ever owned, change some of the the oil often, only one blew up and that was merc so to be expected
15th Feb 2016 7:44 pm
Dudleydisco
Member Since: 20 Jun 2014
Location: York
Posts: 853
Great write up as always Robbie. Thank you D4 MY14 XXV - RLD/IID BT
D4 MY13 HSE Lux - RLD/IID BT
P38 RR - Sad parting
110 - Even sadder parting
S3 88" - Still going strong after 23 years of ownership
15th Feb 2016 8:09 pm
PatGAPInnov Site Sponsor
Member Since: 02 Dec 2011
Location: Montreal
Posts: 745
Rob, great write up as usual.
Clearing the adaptions is indeed recommended when performing an oil change. Its also a good time to check if the firmware is up to date.
Member Since: 23 Feb 2009
Location: Greater Manchester
Posts: 1471
lynalldiscovery wrote:
This is excatly what I have done on every auto boxed car I have ever owned, change some of the the oil often, only one blew up and that was merc so to be expected
I think Mercedes were the only car manufacturer that used to make their own Autoboxes and they were b....y good at it from what i recall.... and you could drain the torque converter when doing an oil change.
Well i could on my W124's
16th Feb 2016 1:54 am
Robbie
Member Since: 05 Feb 2006
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Posts: 17932
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