75-80 degrees, freeway use the temp gage went to about the middle of the 220 on the marlin's oil temp gage.that seems normal to go about 1/8" abouve the 220 hash mark. here's a pic of the plugs. sorry for the double posting.thanks leon
@flhrider- the jagg 10 row cooler has turbulators installed that spin the oil and create better cooling action. they also have less pressure drop across the cooler than the h-d 8 row cooler. hook up with a temp bypass to open the cooler when the oil gets hot and you're set.
