It’s been a complete mission to get my gearbox oil changed, Land Rover refused to do it, quoting “sealed for life” at me as did a BMW garage and two independent LR Specialists!
I’ve had to speak to a transmission specialist who shares my views that NO oil can be expected to last indefinitely without breaking down and loosing its lubricating properties. This guy will change the oil and filter for £155.00 which is slightly more than I would have hoped, but it could prevent thousands of pounds of damage in the future.
Thanks to previous posters who had recommended which oil to use as I wasn’t 100% sure.
I’m hoping to see a slight improvement for my money, I will report back.