So, changed out from the Rotella T 20w50 to Valvoline synth 10w30.. same pressures globally. Go figure. Saw 60-63psi on track all day, and it was a scorcher for here, around 90*. Took the gauge off the car, hooked it to the regulator on the air compressor and it reads the same as the air compressor gauge, so confident the mechanical gauge reads accurately.
So, got great pressure, and running 20w50 vs 10w30 made no change.. odd, but whatever. :) Track day went well, except for a corner worker telling me I have a small puff of smoke occasionally from under the car. Found the front fender liners both rubbed, so perhaps it was just that.. no oil usage or leakage, so no other ideas. Replacement tranny and rear ends worked very well, extremely pleased to be driving the car again! :) Wallyman
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