If you want a better oil for your engine, try one of the synthetics. Mobil
1 can be purchased off the shelf at most stores -- Meijer, Walmart, etc.
For even better oil, try Amsoil or Redline. You would need to find a dealer
(local person) or order direct online. For me, I would probably go the
Mobil 1 route since it is readily available. For my 60HP Mercury 2 cycle, I
have switched from Mercury to Amsoil. My neighbor has become a dealer so it
is relatively easy for me to obtain that oil now.

Jeff


"A.Z" wrote in message
om...
The owners' manual for my 2001 Mercury 4-stroke (90) does not indicate
how to drain the crankcase oil. How do you do that?

Is is really important to use Mercury Quicksilver oil as opposed to
Valvoline or other quality products?