Improved oil or aux cooling?
#21
07-08-2018, 08:01 PM
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I'm not sure that too cool would ever cause a durability issue. I think efforts to warm it, as mentioned, are to improve shift quality.
The vast majority of cars use the tried-n-true transmission cooler inside the radiator which, it seems to me, dictates the ATF temp will be somewhere close to coolant temp. Sufficient in most situations but is very plausible that engine overheating could push ATF temps into the danger zone.
Heat is definitely the killer and cooler is better.....but I'm not sure that unusual efforts to keep ATF super-cool will guarantee longer life. Keeping it in the 175-200ºF range, which is comfortably below the danger zone, should be enough to prevent any problems
Cheers
DD
The following 2 users liked this post by Doug:
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#22
07-08-2018, 08:51 PM
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I'm not sure that too cool would ever cause a durability issue. I think efforts to warm it, as mentioned, are to improve shift quality.
The vast majority of cars use the tried-n-true transmission cooler inside the radiator which, it seems to me, dictates the ATF temp will be somewhere close to coolant temp. Sufficient in most situations but is very plausible that engine overheating could push ATF temps into the danger zone.
Heat is definitely the killer and cooler is better.....but I'm not sure that unusual efforts to keep ATF super-cool will guarantee longer life. Keeping it in the 175-200ºF range, which is comfortably below the danger zone, should be enough to prevent any problems
Cheers
DD
The vast majority of cars use the tried-n-true transmission cooler inside the radiator which, it seems to me, dictates the ATF temp will be somewhere close to coolant temp. Sufficient in most situations but is very plausible that engine overheating could push ATF temps into the danger zone.
Heat is definitely the killer and cooler is better.....but I'm not sure that unusual efforts to keep ATF super-cool will guarantee longer life. Keeping it in the 175-200ºF range, which is comfortably below the danger zone, should be enough to prevent any problems
Cheers
DD
#23
07-09-2018, 08:33 PM
I'm not sure that too cool would ever cause a durability issue. I think efforts to warm it, as mentioned, are to improve shift quality.
The vast majority of cars use the tried-n-true transmission cooler inside the radiator which, it seems to me, dictates the ATF temp will be somewhere close to coolant temp. Sufficient in most situations but is very plausible that engine overheating could push ATF temps into the danger zone.
Heat is definitely the killer and cooler is better.....but I'm not sure that unusual efforts to keep ATF super-cool will guarantee longer life. Keeping it in the 175-200ºF range, which is comfortably below the danger zone, should be enough to prevent any problems
Cheers
DD
The vast majority of cars use the tried-n-true transmission cooler inside the radiator which, it seems to me, dictates the ATF temp will be somewhere close to coolant temp. Sufficient in most situations but is very plausible that engine overheating could push ATF temps into the danger zone.
Heat is definitely the killer and cooler is better.....but I'm not sure that unusual efforts to keep ATF super-cool will guarantee longer life. Keeping it in the 175-200ºF range, which is comfortably below the danger zone, should be enough to prevent any problems
Cheers
DD
Either way I guess that is next on my never-ending list
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