Quote:
Originally Posted by domstriker
Those are some good graphs. Those temperatures reflect oil pan temperatures though.
While I'm not denying that fluid life is shortened by hot temperature, those temps reflect oil pan temp. As kball pointed out, the 4r's ATF temp sensor is located at the send line of the tranny. So the 280 degrees that the sg read did not reflect the actual operating temperature in the pan. I'm wondering what the temp of my ATF was in the pan when the sg read 280.
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I know for a fact that a regular analog temp gauge with sensor placement by a remote spin-on filter generally reads about 15 degree's cooler than the SG2. This is just a guess, but I would say pan temp's are generally about 25 degree's cooler than what SG2 reads.
So 280 was maybe about 255 in the pan. Which is still really hot. Even if SG2 reads 40-50 degree's hotter (which I highly doubt) you're still talking about 230-240 at the coolest point. Again, way too hot for long term transmission health.
