I'm so disappointed with my first sample with Redline 15W40. The lead and copper levels are dramatically higher. I've used Delo 15W40 exclusively in the past with great UOA results. What possessed me to change oils is still unclear. I'll be changing out my oil tomorrow and will go back to Delo. I'll retest soon. Have any of you seen a result as this once dino has been switched to synthetic? BTW, it's a '97 7.3L PSD.
Blackstone Report
Blackstone Report