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Oil temp is derived from coolant temp at the oil cooler. Just the 2 coolant sensors and the oil pressure sensor for fluids.

Jeepman listed the correct positions, oil cooler and front head.
 
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I'm pretty sure the head ECT is for the gauge and fan. The one on the oil cooler is in a coolant passage surrounded by oil, so it gets a pretty close idea of what the oil is, but it's not as exact as one that measures the oil directly.
 

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What I find strange is that the Pacifica pump runs lower pressure, but has more stuff to do with it. You'd think adding VVL would increase the pressure demand. But it's minimum pressure at 3k RPM is half the gen1&2 3.6, and 1/3 across the board on max pressure.
 
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