MMO won't hurt your engine.
You can run it 300 miles or 3000 miles as an additive.
The only warning is that if your engine innards are really dirty its going
to loosen all that (a lot of it) and it's going to fill your filter pretty
quickly. You oil pressure could actually go up because you're pumping sludge
(your filter has a bypass, if the filter stops up it is bypassed).
In 99% of the uses the engine isn't in that bad shape so extreme problems
aren't anticipated.

Stan Wilder

----- Original Message -----
From: "Jason Kirk" <Gojira@ADELPHIA.NET>
To: <vanagon@GERRY.VANAGON.COM>
Sent: Friday, May 14, 2004 3:10 PM
Subject: Marvel Mystery Oil

Wasn't that a Beatles tune? Is it necessary to change your motor oil after
using this product? And when using it to clean your fuel system, should you
change the fuel filter before or after the process? Thank you all.

Jason