Here's my latest sample. I was going to take this out to 17k to the 100k total mileage mark, but a nice day led me to change early. PUP 5W-20 with half a can of LiquiMoly Ceratec. While the mileage is higher than the last sample, I can't say I really saw any benefits from it by the analysis. Next sample will be just plain PUP 5W-20 and similar mileage so we'll see if there is any increase in wear. Filter was a NAPA Platinum 51516. Thoughts?
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