You can try Penrite Trans Gear 75w-80 See here: http://www.penriteoil.com.au/products.php?id_categ=4&id_products=379 Which you can get from Repco and meets the MTF 94 Spec.. I had it in my 200tdi Defender LT77 Box and it was perhaps a we bit thick when cold but great when warmed up. But it will ...