For the first time in 5 years I just noticed today my Edge Insight CTS2 has 2 oil pressure pids. I have always just looked at the one at the top of list labeled "engine oil pressure". The 2nd one was labeled I think just "oil pressure". While driving down the highway I switched back forth between the 2 and had different readings of about 8-10 psi. I will have to hook up the Tech 2 and see which one matches it.