Anybody using this in there box? I was going to ask this question before I filled my box but its too late, did it last night!
I must say that I'm rather impressed with the stuff, hellish price and all. It worked out at £18.70 a quart (less than a litre) but you could probably just manage with 2 quarts in a six speed box.
I've only done 30 or so miles but the shifts much better than with the ATF that came out. First to second change is much improved. It generally feels a lot smoother.
There's a few threads about BMW not recommending synthetic oil in these boxes but RP claim this stuff's OK. I guess I'm going to find out but so far so good!
http://www.royalpurple.com/index.shtml
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