Quote:
Originally Posted by Dackelone
I would be worried. BMW doesn't put out these guide lines for no reason. While I do not know why they say once you use +FM you should never go back to non +FM. There has to be a logical reason - knowing how the Germans think. I just do not know why.
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Spoke with the dealership and they knew what they were doing --- Apparently they were about to install the +FM fluid, same as when I had the break in service done, but the shop foreman highlighted the fact there's a new service bulletin out that 1M's (and I assume e9x M3s) get the non FM stuff. INTERESTING. I hope they aren't just blowing smoke up my ....
But at least I've made them aware. If I have LSD issues, it's on them! (I even highlighted the concern about switching back from FM, but apparently it isn't a huge deal)