How about a

7] If you agree that this all boils down to the owners' own preference and it's his own damn business. You can do more harm over 5 years of being an idiot and driving like one than you can undo by maintaining your vehicle.

and that

8] We've had ab a zillion discussions on oil change intervals.

therefore

9] See 7.

I'm a 7,8,9 guy myself.

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