Restrictors are for race cars.
Thermostats provide stable operating temps and proper flow.
Running the engine too cold [below 190] accelerates wear, contaminates the oil prematurely and it will not run as well as is should.
Yes - restrictors' race application
Yes - thermostat's street application
190* - I am from MO you need to show me, I need proof that it accelerates wear.
I run my hoped up 340 iron head roller engine with a hi flow 160* stat 10W-30 oil. I have seen zero signs of oil contaminate from condensation and the engine runs very well. 8K miles of hard driving and nothing has come apart, cut open the used oil filters and they are clean of any metal.
I believe I saw that mother Mopar used 160* stats, correct me if I an wrong.
Show me
