Break-in Oil

[FreeBeeTony]

Not looking /to start a big debate but............
I usually run 20w-50, but wondering what I should use for my break-in, should I sue something lighter?

 

[Scott Danforth]

Something with zinc. I wouls suggest rotella 15w-40 diesel

 

[Scott06]

Company I bought my new engine from a couple years ago insisted on Rotella mentioned above for break in. I ran it for an hour changed it, then changed at ten hours. Maybe overkill but to me oil and filters are cheap and gives me an excuse to crack a cold one or two...

 

[Scott Danforth]

gives me an excuse to crack a cold one or two...

you need an excuse?

 

[Lou C]

Rotella or Delo in the 15/40 grade are good choices as is the Merc 25/40. For salt water use I found the Merc excellent at preventing corrosion when I had salt water in the engine due to blown HGs. The Merc also stayed in its viscosity range very well on the last oil analysis I did with Blackstone Labs. Personally I'd like to see comparisons of used oil analyses of 15/40 vs the Merc 25/40 to see it there is really and difference in engine protection and resistance to viscosity break down....

 

[FreeBeeTony]

Didn't get that far today unfortunately............see my other thread when I update.

 

[Scott06]

you need an excuse?

Generally no, little encouragement is needed.