I've read lots of people over the years mentioning how difficult it is to get an ATF level reading at 80C...that as soon as you pull over to measure the level the temp starts to drop. So, after I changed the fluid on the CDI today, I was playing around with my scanner which reads the ATF temp. I drove around town and was able to get it up to 65C or so....then it would fluctuate in the 60-65 range. But when I pulled into my driveway and let the car idle, I was surprised to see the temp actually rise to well above 80.

Anyway, glad to get precise readings on the CDI....for the 98 and the 91 I will continue to do ambient temp measurements since I never know for sure when it's at 80.

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14 E250 Bluetec 4Matic "Sinclair", Palladium Silver on Black, 160k miles
06 E320 CDI "Rutherford", Black on Tan, 180k mi, Stage 1 tune, tuned TCU
91 300D "Otis", Smoke Silver on Tan, 145k mi, wastegate conversion, ALDA delete

19 Honda CR-V EX 79k mi
Fourteen other MB's owned and sold
1961 Very Tolerant Wife