185 solved my overheating problems 100%I run a 185 in my 70 roadrunner here in Florida. I used to run a 195, which was the stock for the car. In Florida summer’s with ease wouldn’t 200-205. Not good.. I changed out to a 185 added amsoi’s anifreeze and a bottle of their version of water wetter.. wow! Consistently at 185! Maybe in traffic I hit 195-200. As soon as I move back down. Mileage ,power and throttle are all better.