Does the mag-hytec pans really drop temps,Or do they slow down the increase. Reason why I ask is I can run up to 190* easily but does not get much higher and drops fast, it is only in stop and go traffic that it will rise otherwise it will stay around 160*,this is when pulling my trailers only . When not pulling it is always runs 140* to 150* ,I would like to stay around 160*to 140* all the time.