From what I have read, there are additives in GL5 and GL4/5 compatible oils that can damage the brass / bronze syncros. This additive can etch into the syncros and knacker the gearbox. Just because my car is parked up, doesn’t mean that damage hasn’t been done. I have taken a sample of the oil just in case.
As I said, this oil was recommended and I quote from another thread from 2006
Now they don’t recommend it.
I have spend a huge amount of time, effort and money on this car, I have also put my trust in "experts" but feel I have been let down.
From now on, I will stick to what I
know to be right
.... 5L of Nissan's best for both my cars