Tranny temps
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Senior User
Joined: Apr 2005
Posts: 129
Likes: 0
From: Longmont co.
Tranny temps
I thought I would ask for a little in put here. My 99 psd had a problem running on the high side on the tranny temp (180 common to 220 ) sometimes higher
.Did a complete flush, filter, deeper pan, amsoil fluid and saw little to no change.
I then put a new tow/snowplow tranny cooler on (stock was about 1/3 of the size. Now I have to see the temp get above 140.
Is running the tranny too cool a problem? It nice to see cooler temp, but is this going to trouble for me in the long run? Thanks for the input.
.Did a complete flush, filter, deeper pan, amsoil fluid and saw little to no change. I then put a new tow/snowplow tranny cooler on (stock was about 1/3 of the size. Now I have to see the temp get above 140.
Is running the tranny too cool a problem? It nice to see cooler temp, but is this going to trouble for me in the long run? Thanks for the input.
Senior User
Joined: Jun 2005
Posts: 116
Likes: 0
From: Bridgewater, NJ
Heat has the most damaging effect to an automatic transmission, so running it cooler is not going to cause any harm. In fact, I recall reading somewhere that for every 10 degrees you can lower a transmission's operating temperature, you can double its working life.
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Elder User
Joined: Mar 2004
Posts: 509
Likes: 1
From: Pasco, WA
If you run where the outside temp gets below zero, you might want to consider routing the cooling lines through the radiator after it runs through the big cooler. Or run synthetic tranny juice; it's less susceptible to thickening.
