PH for all tanks

[M_D]

We use SP cleaner from Caswell, heated to about 160-170 degrees F. It works well for our parts that are machined with water soluable oil and then tumbled with with plastic media and Raytech compound C detergent, which leaves the parts pretty clean. For parts that we machine with a petroleum based oil, we run two cleaning tanks (with the same cleaner). We use older cleaner solution in a "pre-cleaner" tank to remove the bulk of the petroleum based oil so the main "final" cleaner tank stays good longer.

[destroyer125]

removing petro based oils is mainly what I need to remove, any idea on that cleaner?

[M_D]

Sorry, I wasn't very clear. The heated SP cleaner seems to remove the petroleum oil ok. Every once in a while we change out the main cleaner/degreasing tank, and use the older used cleaner for the pre-cleaner tank. If something were to have a lot of oil on it, we have used solvents like paint thinner or Stoddard solvent to remove the bulk of the oil to make the heated cleaner solutions last longer.