Time to change the oil on my 2015 road king. Took bike for a 1/2 hr ride to get the engine warm. Decided to take engine temperature readings with my infared temp gun with my FP3 also hooked up. Readings were taken 1 min after stopping: Outside air temp 95 deg Front head 268 deg Rear head 296 deg Oil temp 221 deg FP3 engine temp 258 deg. This seems to be ok but what would explain the diff. Between the FP3 readings and the temp gun, or are they all about equal overall?