Driving on Bitumen in Low Range central diff lock engaged

Submitted: Tuesday, Sep 11, 2012 at 21:38
ThreadID: 97970 Views:10305 Replies:11 FollowUps:15
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Hi

A question for someone with a good knowledge of Toyota 4WD systems. I have a 6 sp manual diesel 120 series Prado which has constant 4WD. High range has options for either the central diff lock on or off. However, Low range only has central diff lock on.

Last week I headed from St Lawrence (south of Mackay) inland to Capella up the divide. The road in mostly gravel but there are several very steep sections (20% slope for about 5 km) that are sealed. Was towing a camper and it was a tough pull. Got up there in High 1st but was wondering what the options were if the road got steeper!!!!

My question is can Low range with the central diff lock engaged be used on hard surfaces. The Manual instruction is vague suggesting its for use on snow, mud etc. My understanding is that with this central lock engaged provides the same revolutions to both front and back axles but obviously the front and rear diffs can allow for different speeds of inner and outer wheels.

Any thoughts appreciated

cheers

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