I always go slow now. I think that mototune or whatever it's called hard breakin method is BS. An engineer friend was talking about it last weekend and he said all their data was based on lawnmower motors.
The previous owner of my husky broke it in hard and the motor was worn out very quickly--I rebuilt it and broke it in soft and the difference is very noticeable. I'm hardly getting any junk on the drain plug even with ~70% of the miles that the last motor lasted in total.
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