I used the LRN402 stuff from LR. At the time we didn't know of any alternatives. It was too much of a risk for me to use anything else. Fekin up my replacement auto which cost me £2200 fitted weighted heavily on my mind. Hence why I insist manufacturers should list the Freelander 1 jatco on their websites if their oil is suitable. If they put it on the tub indirectly as a LRN402 replacement then there's nothing wrong with something more formal on their web site listing the jatco. I have nothing against peeps using alternatoives. I still remember the jerk as it changed gear coming out of bnq and having to pull over. Oil leak = low oil = torque convertor cavitates when air gets in = destroys it = £ or scrap. I used the standard drain/refill which changes about 42%. I did this 3 times with approx 200 miles inbetween. The LRN402 smells nice too.
I understand your concern about alternatives to the LR stuff, but what is in the LR bottle anyway? It was Texaco N402 as they supplied Rover and LR with oil for the Jatco box. The Texaco N402 was superseded some years ago now and is now called Texamatic 7045!! It's more than possible that this is what LR supply in there bottles now anyway. In imho it's better to use a better quality fluid than ether putting a change off due to the cost of the LR stuff or by using a now out dated mineral based fluid.