Here are my first Blackstone results on my 1983 300SD at 3,217 miles oil change (mobil 1 5-40).

Looks OK except for:

My number / Universal Average for OM 617

Molybdeum, 24/21
Potassium, 10/5
Magnesium, 394/339
Phosphorus, 1233/1149
Zinc, 1473/1369

Sus Viscosity, 80.3/65-78.

Car runs great! No leaks does not smoke or burn oil between 3,000 mile oil changes. 27 - 30 mpg mixed driving and good pickup. I change the Mobil 1 5-40 every 3,000 miles, hot overnight draining and fill to between the full and add mark.

Are these the universal numbers other members with the 617 where given? Is my car's number showing something to come? Have I been driving it wrong - for 22 years?

Attached Files

MB oil report.doc (36.5 KB, 138 views)

__________________
_____________________________

In scuba diving and skydiving as in life, if it isn't fun, your doing it wrong.

Original owner & daily driver, 1983 300SD 298,000 miles.