Originally Posted by ExcursionDiesel
I thought our motors had a unique requirement and only 2 oils met the spec at this time? Is Rotella T5 on the list?
The oil required is basically the same spec as Mercedes Benz 229.51 ; which has low SAPS, meaning sulfated ash, phosphorus, sulfur. There's a small handful of oils that meet 229.51, not easy to find in USA.
Rotella is 1.0% ash were as a C3/229.51 spec oil will be .8% ash
ZDDP, Zinc/phosphorous will be 25% less with C3/229.51
It still has the same additives, just in less quantity.
Now I believe the C3 oil can carry more soot without thickening, hence why I change out Rotella more often.
Use CJ4 rated oil or Rotella with caution, but it will protect the engine better than C3/229.51 oil in most cases. I wanted to run Rotella during engine break in at least, and it hasn't burned any oil so far, so no oil has made it to the DPF.