5.3 former rental, bought with 95 k, changed oil at 100k. Yukon has 105k now with either 5w20 or 30 m1 15k synthetic. 4k into this change added a quart before short road trip of 300miles. Now 5k into oci I added another 2/3 qt before \ during an 800 mile trip. Is oil usage normal in this engine, its dry underneath. Does it have anything to do with the 4 cyl cut out?
Olm is at 17 % at 5550m , I will do a uoa at 6k when I get home . it has a m1 oil filter as well
Olm is at 17 % at 5550m , I will do a uoa at 6k when I get home . it has a m1 oil filter as well
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