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Originally Posted By: Seventh Your 2018 440i comes with free maintenance which you have already paid for in the purchase price of the car. Take advantage of it. When the maintenance is expired continue using the oil spec the car calls for. There is no reason to use a 40wt oil for a 10 minute...

I suppose by "protection" I'm implying to your typical wear and tear - metal on metal, and protection from both short term drives where the engine does not warm to full operating temperature, as well as protection from high heat situations from more spirited driving. As for the synthetic oil...

this is GREAT information. appreciate the knowledge. BMW Riverside, as I've been informed, uses Castrol 5W30 in all their BMW cars (non-M). I wanted to use something along the same lines to prevent going back and forth between weights. I was planning on changing oil changes between the included...

Evening folks, I've been trying to understand this crazy world of oils here. I've been a fan of amsoil for quite some time - UOA on my previous G37 always turned out great, at least...in the the eyes of an amateur. Despite, would love to utilize amsoil again on my '18 BMW 440i, and upon doing...