This is the second analysis 8550 miles on 10 quarts rotella t5 cj4 10w-30 and 3 quarts rotella t5 ck4 10w-30. Copper and silicon trending down. Iron is up but the miles are almost double the last interval and iron could still be a combination of break in and increased wear from towing 15k on weekends.
Delo 10w-30 cj4 went in.
Delo 10w-30 cj4 went in.