I guess same reason some people (for whatever reason) still swear by every 3000 miles. What a waste of money and oil.
Condensation as a byproduct of combustion and temperature changes from heat cycling. Said moisture is very acidic and doesn't really do your engine any good if left in there for long periods of time.
Last edited by badger; 05/30/15.
To anger a conservative, lie to him. To annoy a liberal, tell him the truth.
