Quote:
Originally Posted by Bomzara
Thanks for your opinion Fknid! What oil do you use now?
I've been always using premium 5W-40 API SN oil from LiquiMoly on all my BMW's. Have never had any problems with it.
Shouldn't the LSPI impact the engine performance though? TBH I don't feel any noticeable power loss when this sound appears.
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I've never noticed a dip in power. You'd never know the difference with the windows up. I'm with you after all this research that it has to be the internal wastegate flap. The dealer will prob tell me to pound sand if I ask them to inspect it at it's next service