No, you can send 1 to 3 samples at a time back to the lab in the pre-paid mailer included with the kit. Let's say you purchased a kit with 2 sample bottles but want to send them in for analysis one at a time. You would send the first sample back to the lab using the pre-paid mailer from the kit. For the next sample, you would need to pay for the shipping to the lab.

Ship all samples to:

SPEEDiagnostix Sample Processing

111 N. Walnut St.

Dover, OH 44622

TBN is an outdated test method developed for high sulfur diesel fuels. Today's low sulfur fuels make TBN an irrelevant test. Major OEM’s like Cummins and GM stopped using TBN as part of their analysis program nearly 10 years ago. FTIR is the modern way to determine the useful life of the oil.

Unfortunately, No. Accurate testing requires prior knowledge of the sample. For example, gasoline engine samples are processed slightly different from Diesel engine samples, so we need to know what we are analyzing before the sample goes into any of the equipment. As such, the SPEEDiagnostix kit is part of the sample process. You can transfer your sample into the SPEEDiagnostix sample bottle when you receive the kit, but the whole process begins with purchasing the kit and following the instructions provided.