Not looking to start a flame war here, but wondering what the collective wisdom is on the newer cars. I'm coming from a 740 with a 500k on the clock and have always run dino 10/40 every 5k and the engine's original and still good.
In reading the owners manual last night, it said that it's not necessary to run full synthetic so long as the maintenance interval is observed. True/false? I'm in Colorado so whatever I go with needs to be multi viscosity. The owners manual also recommended 5/30.
Thoughts?
Thanks in advance.
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