4100SCA diesel engine oil & transmission oil

[Mully26]

Looking to change all the fluids on my boat I just bought and not sure of types of oils required for Cummins 330 and transmissions any suggestions would be great. Also any engine maintenance recommendations. 1100 hrs

[shrew]

I would suggest getting a copy of the service manual for the year and model. The same for the transmission. It's not just for the correct weight, but also the minimum API category (e.g. CJ-4, CI-4 etc) and the correct quantities. The transmission is not Cummins. It might take transmission fluid, it might take oil. Mine ZF transmission takes 30 straight weight diesel oil. You'll need the year, make and model of both the engine and transmission, then find the appropriate service manual.

[PJHoffnet]

[dbriceno]

Rotella 15W40. at 1100 hours you need a full maintenance. 3-5K per engine