I'd like a trans oil temp gauge also. I filled this time with Mobil 1 ATF, I have found that in (retarder-equipped) my larger transmissions the higher thermal-transmissivity of the synthetic fluid makes the transmission run cooler. I have also used Castrol's synthetic ATF in my big ZF for the same reason, but don't currently have a source (was also sold as Allison Transynd).

A trans-temp gauge, engine oil temp gauge, IAT, and voltmeter are wants, but I'm running out of space.

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Gone to the dark side

- Jeff