Originally Posted By: pbm
Originally Posted By: dustyroads
Yes the NAPA kit goes to an ALS tribology lab and does include TBN. The kits I've purchased all had multiple mailing labels inside, letting you choose the location to send the sample.
I mailed mine to the Atlanta lab and it took quite a while to post the results....next time I'll try mailing to the Ohio lab.....and yes, it does give TBN...
Last year I sent a couple samples to the Cleveland, Ohio lab because it's not too far away and thought it would get me quick results. My samples were delivered the second day, but didn't get the reports for nearly two weeks. The Cleveland lab apparently forwarded my samples to Georgia because the report gave the lab tech's name and a location of Atlanta. So now I just mail mine to Atlanta and get a report within 5 business days of drop off. At least the last few times.