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Originally Posted by py0413
I can find mobil 1 0w40 locally at some very fair price, but finding 0w30 or 0w40 Castrol would be pretty challenging. I know many people and dealership(s) use 5w30 for our cars. Just curious, if I use 0w30 or 0w40 as owner's manual recommends, would this really be better?
btw, which 5w30 Castrol should I use? Castrol Edge w/ TFST is more expensive and more difficult to come by while Castrol Edge w/ SPT is widely available @ much lower prices.
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If you use 5W-30 just stick with the BMW oil. It's pretty good I think. I just sent my BMW oil to Blackstone so will post here when I get a report back.
In the mean time I am now running German Castrol Edge 0W-30. I think this offers better protection, particularly during startup when the engine is cold. I will report on this later, but for now the engine is running very smooth but to early to comment on any differences.