Tom.B
Moderator Emeritus
- Joined
- Jul 30, 2009
- Messages
- 5,839
- Location
- USA
- Vessel Name
- Skinny Dippin'
- Vessel Make
- Navigator 4200 Classic
Getting ready to do annual engine work on my Perkins 135hp. For the past three years I have used Rotella T 15W40 because that's what the previous owner used. Come to find out, for above 80-degrees the manual calls for SAE30. With 2300 hours, the engine has a few little leaks (hey... it's a Perkins) but I still haven't needed to add oil throughout the past year.
Should I stay with 15W40 or go to 30?
Should I stay with 15W40 or go to 30?