the reading you get is,not direkt with the termostat,so if you have a 87 one it would show more the 90.the oe termostat in a vr is 80 stop confusing people. in regards to the fuel eco. there is abit off trues too that but the peopel that get that termostat from neuspeed ,also get other things don ie chipping and then that small amount that it would be using more would be adjust away,and an olie temp off 90-95 would be fare better then what you say,the olies today avery good an still work fin at 150degress.the hotter the engine the more bhp you loose,lower the temp in the engine bay 10degrees a