Quote Originally Posted by SteveM4A1 View Post
on yammies (HPDI and SHO), as well as etecs, it is a very good idea to have one. On a Merc optimax, not so much. Can cause fuel restriction and lean conditions.
I did say he "could" put a fuel/water separator on ... not that he "should" !!

Seems that some Merc engines already have a "filter" & don't recommend adding any more "in-line" filters, for the very reasons that Steve has stated. Good catch, Steve !!


... pappy