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- Jan 25, 2005
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They only reduced the quantity of oil down from what the original amount specified due to not having a breather and the seals were blowing or leaking. So instead of blowing seals and leaks you got premature bearing failure. Cue a rethink from BMW, let’s fit a breather and we can increase the oil capacity = no leaking seals, no premature bearing failure
Neil, I kind of get that, but the fill plug is the limiting factor if you go by the book. As is the capacity at 180cc so how did we get to 225cc? What am I missing?