Quote:
Originally Posted by jcardea
I will take delivery of my X5 xDrive 40i Saturday and have question of some of you. I believe the in line 6 is the B58 engine. It should be a DGI (Direct Injection) engine. My question is this, what is BMW doing about carbon buildup on intake valves in such engines? Has BMW went forward and added the supplemental port injectors like other manufactures have to spray fuel on valve to clean them? Does this engine have a traditional PCV valve system? Is there already an oil catch can of sorts build into PCV system? Reason I ask is that last fall I tore down a 2013 Hyundai four-cylinder engine that had so much carbon build up, it burnt the right-hand valve on #2 cylinder about 20% was gone. DGI engines are going to have this problem regardless of who manufactures it. I certainly hope a B58 engine has some how been addressed to some degree.
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Every 3k miles buy a $10 bottle.
Look for "Chevron Techron Concentrate Plus Fuel System Cleaner - 12 oz" on Amazon.
End of story.