I own a 2009 BMW 550i with the ZF 6HP26 auto transmission. The prescribed transmission fluid is ZF Lifeguard Fluid 6, which I used in my most recent drain/filter/refill about 40k km ago (and I assume was in use originally when I purchased the vehicle). ZF LG 6 is rather expensive here in Canada at around $40/L, and I'm open to better/cheaper alternatives. One fluid that has caught my eye is Ravenol 6HP. It's PAO-based and German-made, but seems impossible to find in Canada. From what I can see, it's a little cheaper than the ZF fluid in the US. Has anyone else used Ravenol 6HP in place of ZF LG 6, and if so, what are your impressions? Are any other German fluids equal to or superior to LG 6?
Thanks.
Thanks.