that is true about speedco, but the quality of the sample is dependent on how good they clean the machine. i got a suspect sample from speedco that was not suspect it was contaminated from the previous sample. just be careful.
that is true about speedco, but the quality of the sample is dependent on how good they clean the machine. i got a suspect sample from speedco that was not suspect it was contaminated from the previous sample. just be careful.
I use speedco. If I see a sudden change in reading, I would get a second opinion from a lab. But, it is a good base to watch for any problems. They found cooolant in oil on an MBE 900, and I found my EGR/Cooler leaking. The TBN ( total base number) reading tells you how the additives are doing, allowing longer intervals between changes. Bottom line, wherever you go, it is well worth the effort.