Quote:
Originally Posted by swamp2
This is not an "academic" concern. It is fundamental to observation of data and conclusions about such - so I don't really agree. With a simultaneous oil brand/weight switch and mileage interval switch one can't separate which caused the change.
Now, given the specifics of your hypothetical case, which is totally different from that to which I originally replied to, I do agree seeing those changes one could make a reasonable conclusion that the oil was making a difference.
|
Got ya. Maybe I misunderstood your original comment. My hypothetical case is they type of situation that popped into my head.