JESSEDIVER49
Senior Member
- Joined
- May 2, 2013
- Messages
- 187
- Location
- USA
- Vessel Name
- Good Vibrations
- Vessel Make
- Grand Banks Classic 42
Yesterday I was buying Shell Rotella 30 wt for oil change in my Ford Lehmans and guy in store mentioned the Delco 400 was on sale. I only use the Shell Rotella 30 wt because that is what former owner used. I had never even heard of Delo. Guy at counter next to me was a diesel mechanic (land diesels). He spoke right up and said his experience rebuilding diesel engines is the Delo 400 is far superior to the Shell Rotella. He said all other variables the same, engines using Delo ran 2-3 times longer before rebuilds than ones using Shell Rotella. My marine diesel experience as an owner is 18 months so I'd like to hear from anyone who may have experience with Shell Rotella vs Delo 400. I also asked the mechanic if any problem mixing the two and he said no problem as long as you are mixing identical viscosities.