Any of the commercially available diesel oils have about 1300ppm zddp and around 1100 Phosphorus which is adequate for our sewing machines. All of the big 3 brands such as Delo, Rotella, or Delvac go on sale at the FLAPS for around $13/gal and are an excellent value. All brands have synthetic counterparts and I know Rotella T6 5w40 is on sale right now at O'reilly because I just bought some for $21/gal. Break in cam with SAE 30 break in oil (brad penn, delo 30w, joe Gibbs etc brand is irrelevant just HAS to have zddp). Good luck