Cummins 8.3 recommended oil - Printable Version +- Tiara Yacht Owners Forum (https://www.tiaraownersclub.com/forum) +-- Forum: Tiara Yachts Discussion Forum (https://www.tiaraownersclub.com/forum/forumdisplay.php?fid=6) +--- Forum: Diesel Engines/Transmissions (https://www.tiaraownersclub.com/forum/forumdisplay.php?fid=27) +--- Thread: Cummins 8.3 recommended oil (/showthread.php?tid=8355)

Cummins 8.3 recommended oil - dan@superstamper.com - 07-19-2022 Does any body know what oil I should be using in my 8.3 Cummins engines? RE: Cummins 8.3 recommended oil - egstasea - 07-19-2022 [Only registered and activated users can see links Click here to register] RE: Cummins 8.3 recommended oil - ReelMagic - 07-19-2022 I own a 2003 38 Open w/ Cummins 6CTA diamond diesels (450hp) and use Rotella T 15W40. Been using it for more than 15 years and have been quite please with it. Know Cummins recommends either Rotella T or Valvoline Blue... RE: Cummins 8.3 recommended oil - neto - 07-19-2022 Rotella 15W40 RE: Cummins 8.3 recommended oil - MC1600 - 07-21-2022 Another vote for Rotella. That’s what I used when I had gassers and it seemed to do great.