With factory cooler and the bypass, driving through stop and go traffic in Pittsburgh in the summer my truck hit 175° in the winter time you might see 120°. I put the updated thermal bypass valve back in for the winter in my work truck. I do a lot of open road driving and it doesn't get over 100° in a 70 mile drive with the bypass. It's around 140° with thermostat in. These are pan fluid temps.