My 1994 perkins, 850 hours, 30W Shell Rotella T. Guy MoonShadow #115 On Aug 12, 2011 1:26 AM, "Nat Antler" <nantler at pacbell.net> wrote: > My 1994 Perkins 29 (with 500+hrs.)-- previous owners listed Shell Rotella 30w as the recommended oil. That's what I've been using.