206K miles on 2004 dodge Ram 1500, 5.7 Hemi.
Been a slacker and went 14,268 miles on M1 5w30 EP, M1-301 filter . Has used about 3 extra quarts during OCI. Oil looked pretty good though.
Replaced with 5 quarts of M15w30EP, and some left over M1 0w30, and Syntec and and going for the 1st time with a cheaper filter, Walmart bought Motorcraft FL-1A.