Interesting to see the RC car oil as it's good to see some other sources, most tutorials have specified oil from Toyota dealerships. I got lazy on the sourcing as I live way out in the country, and just ordered a new "heavy duty" clutch as they are supposed to have better lockup characteristics.

This is US Motor Works 22301 and was a drop in replacement for around $80. Pretty happy with its performance.

However I still have the old one in my junk heap so maybe I should fish it out and fix it as a spare!

Just a note from someone who has done a lot of work with IR cams, thermal scanning etc. as well as radiant heating systems. Infrared thermometers work TERRIBLY on aluminum and other reflective surfaces. This is because those surfaces do not radiate significant IR. If you put up a radiant heating surface with the aluminum fins on pipe, it will not dissipate any heat until you cover it with some sort of wallboard. The aluminum fins conduct to the wallboard which then radiates. Weird hey?

With a thermal cam you can actually see your own reflection in a piece of bare aluminum or steel.

I would recommend using a lightweight thermocouple like used for HVAC work if you have one, or at the least use a paint pen to colour a spot in black. You'd be amazed how different the temperature reading is on black paint vs. reflective metal.

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1993 300D 2.5L Turbo
1991 300E, looking for diesel to swap in