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Words from Blackstone from last sample: "cylinder-area metals have increased quite a bit. We expect high metals during wear-in, but things should generally improve -- these increases could show a problem with pistons, rings, and/or cylinders. It's possible the increases are due to running rich...

The first number is from a sample with same brand filter taken January 28, 2011 with 7,950 miles. The second is 8 months later also with a K&N filter and 12,178 miles and and end ODO of 193,611 on the '02 Accord. Just before this was a 2,000 mi highway trip. The next oil change is using a...

First post here. I sent in my oil using Caterpillar services since it was a little more convenient. I keep extremely detailed records on fuel fill ups and ONLY fill up with Marathon (used to be Texaco) gas stations since they have the STP additives, which may have helped get decent numbers. I...