This is an article from the "Heavy Duty Truckning" magazine, discussing extended OCIs. Can synthetic oil save you money?
Somewhere at the bottom of the page it says:
Quote:
For instance, P.A.M.'s Tapp says with the advent of the 2007 engines, they tested the CJ-4 version of their supplier's full synthetic motor oil in a couple of test engines starting in late 2005. They took used-oil samples every 5,000 miles to see if they could keep their 150,000-mile drain intervals they had been getting with synthetic oils.
"After analyzing 675,000 miles of sampling data, Mobil's engineers decided that the new oil would not hold up to the oil drain interval of the old Delvac 1 on pre-2007 engines," Tapp says. "At that point our choices were to reduce the oil drain interval to 100,000 with the CJ-4 full synthetic, revert to conventional CJ-4 oil at low oil drain intervals, or move to Mobil's CJ-4 semi-synthetic product with an extended drain interval, but still under 100,000 miles. We did the math and it became a matter of economics to convert the fleet to the semi-synthetic product and still realize some of the benefits of using synthetic oil."
What does this actually mean?
a) Delvac 1 ESP cannot provide a 150.000 mile drain interval in P.A.M.'s 07 engines.
b) Delvac 1 ESP cannot provide a 150.000 mile drain interval in P.A.M.'s pre-07 engines.
The testing was done with the "advent of the 2007 engines", so are we speaking of 07 engines exclusively?
My incomplete english skills may be the reason for my doubts, but I think asking is better than living in a wrong believing.
Regards,
E.D.
Somewhere at the bottom of the page it says:
Quote:
For instance, P.A.M.'s Tapp says with the advent of the 2007 engines, they tested the CJ-4 version of their supplier's full synthetic motor oil in a couple of test engines starting in late 2005. They took used-oil samples every 5,000 miles to see if they could keep their 150,000-mile drain intervals they had been getting with synthetic oils.
"After analyzing 675,000 miles of sampling data, Mobil's engineers decided that the new oil would not hold up to the oil drain interval of the old Delvac 1 on pre-2007 engines," Tapp says. "At that point our choices were to reduce the oil drain interval to 100,000 with the CJ-4 full synthetic, revert to conventional CJ-4 oil at low oil drain intervals, or move to Mobil's CJ-4 semi-synthetic product with an extended drain interval, but still under 100,000 miles. We did the math and it became a matter of economics to convert the fleet to the semi-synthetic product and still realize some of the benefits of using synthetic oil."
What does this actually mean?
a) Delvac 1 ESP cannot provide a 150.000 mile drain interval in P.A.M.'s 07 engines.
b) Delvac 1 ESP cannot provide a 150.000 mile drain interval in P.A.M.'s pre-07 engines.
The testing was done with the "advent of the 2007 engines", so are we speaking of 07 engines exclusively?
My incomplete english skills may be the reason for my doubts, but I think asking is better than living in a wrong believing.
Regards,
E.D.
