My reason for using Speediagnostix probably doesn't apply to the majority of people on BITOG. I'm getting old and my handwriting is beyond atrocious. The sample submission form for OA (and BS) is a small piece of paper where you fill in the blanks and/or check boxes. Speediagnostix has an online form which identifies each sample by its Sample ID#. My ability to legibly fill out an online form is limited only by my typing skills, which aren't quite at the level of atrocious, yet.
Previously, I bought three kits from Amsoil to send OA virgin samples. My wife filled out the forms and I mailed each sample separately. All forms were clearly identified as virgin samples with the brands and viscosities noted. They still ended up comparing two of the samples against each other, highlighting in red some fields that were too far apart from the "previous" sample.
I just did the first oil change on the new Pilot (494 miles) and tonight filling out the online forms to submit a virgin sample of Amsoil SS 0w-20 for VOA and a mid-stream catch of the OEM oil for UOA. I realize there are quite a few recent VOAs for the Amsoil SS 0w-20, but it's convenient having all the samples on the same results' reports. I'll change again at around 5k miles and send in another UOA to see how the engine is "breaking in"
