Purchasing 500,000+ km County with 4BD1? Too many miles?

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Originally Posted by Zcoota

My Son's County runs a LT95 that's a bit on the noisy side. We found emulsified oil in in when we got the car home and did a prompt change. I suspect worn bearings, do these boxes fail in a spectacular manner or soldier on? We have a spare box but are not sure how urgently we need to do the change.

Cheers,

Mark

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My experience is that they just soldier on. As long as the correct oil is used (note that EP90 will, in cold weather, break the oil pump). Low oil will also damage it. Note that an issue is likely to be transfer of oil between the gearbox and transfer case - but this is not an issue as long as you keep an eye on it and ensure neither runs low. Excessive driving on corrugations with the centre diff unlocked will hammer the thrust washers in the centre diff.

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Originally Posted by JDNSW

My experience is that they just soldier on. As long as the correct oil is used (note that EP90 will, in cold weather, break the oil pump). Low oil will also damage it. Note that an issue is likely to be transfer of oil between the gearbox and transfer case - but this is not an issue as long as you keep an eye on it and ensure neither runs low. Excessive driving on corrugations with the centre diff unlocked will hammer the thrust washers in the centre diff.

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Thanks, that's good to know. Fingers crossed, lets see how she goes.