Can someone explain how low range and diff lock work on the P38 auto?

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TCubed

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Surrey
Can someone explain how low range and diff lock work on the P38 auto? What is a viscous coupling? Is an auto transfer box the same as a manual transfer box?
 
start again ,all p38 range rovers are equal 4wd ,instead of a center diff lock to give equal torque to both axles in slippy conditions it uses a viscous coupling which allows movement for cornering etc but locks diff without you needing to do anything ,both manual an auto transfer boxes have hi and low speed and are the same apart from input splines in epicyclic as output splines on gear boxes are different
 
Furthermore, does a P38 actually have Hill Descent Control? Or is that little picture on the gearstick just a note as to which you should be in for hill descent?
 
Furthermore, does a P38 actually have Hill Descent Control? Or is that little picture on the gearstick just a note as to which you should be in for hill descent?
p38 dont. low range is a better system imo, dont break discs so quick.
 
Last edited by a moderator:
Steep hill, muddy conditions - touch the brakes and you can get into a monumental slide.
Low range is better for hill decent. Third gear low range keep your foot off the brakes and let it slowly unwind down the hill.

Also traction control is better for an all round on road/off road car imho. 4 wheel TC on later p38's is awesome.

Limited slip diffs fitted in front/rear axles are noisy in operation (and expensive).
 
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