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Why on Earth would anyone want or accept 220 degrees of ATF temperature? Or, consider it "Acceptable"?
Well put!
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If you use the temps the 8 speed runs at in the Heavy Duty 3/4 ton trucks,i'd say the ideal temp is around 160/165.I've never seen anything from either ZF or Stellentis mentioning an ideal temperature,so all we have to go off,is what the HD trucks run the transmission at,not the 1500's which pre-heat the transmission fluid.Little tidbit for you,only the 1500's use the thermal management heater on the side of the 8 speed,the 5.7 and 6.4 cars and the HD trucks don't use the pre-heater.
This chart is helpful.
Once upon a time, water heaters were made without pressure relief valves AND installed right in the bathroom adjacent to the bath tub. My mother nearly died as an infant in the early 1930's when her mother laid her next to the water heater to dry/ dress her. The water heater consumed all the oxygen in close proximity and my mom turned blue and stopped breathing. My grandmother's screams brought my grandfather up the stairs 2 at a time, so the story was told to me. Mom spent a few days under an oxygen tent in the St. Joseph's Hospital in Downtown Houston... and survived well.
So a 1800s designed natural draft water heater (presumably natural draft by the timeline given) without a T&P valve (irrelevant note to the rest of the story) somehow used up all of the available oxygen in the room without roll out, to the point of suffocating an infant child, and this is your response to questions about automatic transmissions designed and built in the last couple of decades?Once upon a time, water heaters were made without pressure relief valves AND installed right in the bathroom adjacent to the bath tub. My mother nearly died as an infant in the early 1930's when her mother laid her next to the water heater to dry/ dress her. The water heater consumed all the oxygen in close proximity and my mom turned blue and stopped breathing. My grandmother's screams brought my grandfather up the stairs 2 at a time, so the story was told to me. Mom spent a few days under an oxygen tent in the St. Joseph's Hospital in Downtown Houston... and survived well.
Although high temperature transmission failures certainly don't present as hazardous to human health, the point is: What was once accepted engineering was changed for a variety of good reasons. So, just because a dial face shows a range of temps doesn't mean much.
And, yes, there IS a sort of "conspiracy". That being to make vehicles much shorter in life span to force consumers to buy new cars.... after all, those folks want to keep their jobs!
In summary, trans fluid will work happily in the 150 degree area and last for a VERY long time.... and not char-broil your tranny before it's time!
Dude get over yourself,this is the way alot of threads transpire,either learn to accept it,or don't let the door hit you in the a$$ on your way out. You aren't that important to be trolled
