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2001 Ford F-250 7.3L Diesel:
Rotella T4 15w-40 and Motorcraft FL 1995 out.
Motorcraft 15w-40 Super Duty and FL 1995 back in
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2010 GMC Sierra 1500:
AC Delco PF48 and NAPA Syn-Blend out and the same back in.
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D
2010 GMC Sierra 5.3L
6-qts Harvest King Conventional 5w-30 and A/C Delco PF48 out
6-qts NAPA Synthetic Blend and A/C Delco PF48 in
3,000mi OCI
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2021 Chevrolet Tahoe LT 0w20 Citgo Superguard with AC Delco oil filter