I do not support the 160F thermostat. After extensive testing I found most thermostats open at there stated value but do not close until 10F below their value. If you had a cooling system equivalent to a superformance then your engine would run at 152F which is horrible. You will wear your engine out, cylinder walls will be cold while piston is hot, there are numerous charts demonstrating this. Go with the 180F it seams to be the sweet spot between performance and longevity. In addition with the 160f you
oil will take forever to get to temperature. EVERY SINGLE NEW CAR MANUFACTURE RUNS THEIR ENGINES AT 212F, THE OPTIMIUM TEMP FOR COMBUSTION, EMISSIONS, LONGEVITY.