Landcruiser Transmission Oil Transfer

is that likely to be the same on a Hilux (LN106)? I lose about a litre of oil every year from the TC into the GB.
And if that is possible does that TC breather you mentioned have room to fit a piece of hose to extend the breather up into the cab in case of deep water crossing?
cheers

Your theory would not have held water with my HJ45 as it had extended breathers up into the engine bay near the brake reservoir, and it still transferred oil. A mechanic at the time said the action of the output shaft actually pumps the oil forward once the seal wears.

The HJ 45 would have a 4 speed gearbox and used a different transfer. And your mechanic is half right, the 4 speed gearboxes had a bad habit of the output shaft nut on the main box (not the transfer case output nut which you can see when you drop your tail shaft) of coming loose and let the two main gears float and wear the shaft and yes they would false oil through the seal. But this a fault that needs to be repaired not band aid fixed by putting a transfer hose on it. Some years ago we started fitting a different rear output seal in the main box with a double lip seal out of a automatic gearbox which fixed the oil transfer in to the main gearbox but blew the rear seal out of the transfer case, this idea was short lived. We now fit a small elbow on the pressed steel cover plate that cover's the PTO mount and extend the breather up under the bonnet. At the end of the day you will do what works for you.

Thanks for the info, I now have a standard 100 series 1HZ, do you think that this t/case will need any mods like a better breather?

Hi Mike, your 100 series will not transfer oil as the two gearboxes are now separate and have a drain hole in the adaptor case that will indicate if there are any faults with seals.
And I believe that breathers on your gearboxes and your diffs is one of the best mods that you can do on any 4wds. For the small outlay it could save thousands of dollars.
And with the floods that you guy's are dealing with now in your lovely state there would be no better time to fit your breathers.

All the Best
Lee

Thanks Lee,
I have fitted breathers running up to the engine bay. Like you I think they are very important.
Mike