I would say the answer is NO ....
Duron XL synthetic blend meets EO-N spec
Nov 1, 2002 12:00 PM
Petro-Canada's Duron XL Synthetic Blend 15W-40 heavy duty engine oil has added the new Mack EO-N Premium Plus specification to its list of OEM and global credentials.
Duron XL Synthetic Blend 15W-40 is formulated from the patented HT purity process Petro-Canada uses to produce 99.9% pure synthetic base oils. By removing impurities, Duron XL Synthetic Blend retains its fresh oil properties longer. Petro-Canada blends in specialty additives for even longer fluid life and greater equipment protection from abrasive soot particles.
In field trials with a major on-highway commercial carrier against non-synthetic blend 15W-40 heavy duty engine oils, Duron XL Synthetic Blend 15W-40 stayed in grade longer, provided faster cold-weather start-ups, demonstrated better wear protection, and had a longer oil life.
For more information, contact Petro-Canada, PO Box 2844, 150 Sixth Ave SW, Calgary, Alberta, Canada T2P 3E3.
BTW if you can get t/use the Duron XL GO FOR IT ! great oil I have seen some fantastic UOA on this oil ..wish it were availble over here..nextime I am up in BC ..I am getting 5-6 gallons