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I used Motorcraft 15w-40 and a Fram (Motorcraft design) filter. The Blackstone analyisis was 22.50. Well worth the price.
Bismic, I know why you asked that. I have read that the Schaeffer's tend to show lead. I am now running 5w-40 Rotella. Two jugs are CI and two are CJ rated. We shall see....
On edit, I did have my rear main seal replaced so that may account for particles/wear in the temperal sense.
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2004 F250 CC FX4 / 46g Transfer Flow / ARP Studs / Coolant Filter / CCV
2004 Surf Side 30' pull trailer
1999 Pontiac GTP modified
1968 Pontiac Firebird (restored)
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