Io-375 with a superior cold air sump. Garmin sensor kit came with the UMA 1B3-2.5R oil temp probe. Sump has 1/2" NPT threads, sensor is 5/8-18. Bought an Autometer 2264 1/2NPT to 5/8 straight adapter but the sensor bottoms out before the copper crush washer is engaged (threads on adapter are too short or threads on sensor are too long depending on how you look at it). UMA doesn't make a 1/2"NPT sensor. So what are you guys doing for oil temp with a superior sump?