Author Topic: Transmission coolers  (Read 421 times)

January 09, 2017, 08:34:08 AM
Read 421 times

Stev0

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How much does the auto trans effect the vehicles temperature when driving in really hot conditions?
ex Prodrive Xt, X, XT, WRX STI, Outback 3.0R

January 09, 2017, 10:30:02 PM
Reply #1

Durbanboy

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The AT should not affect engine temp at all. Both systems are designed to run at the same temps.

I know my Foz is much older than your Outback. My trip to Plett earlier last year with four adults and luggage for two weeks through some hectic passes and downshifts galore showed no changes to engine temp.

Coming from CT to Durbs in January, my OAT leaving Strand was 38 deg C and went down to 36 deg C through the Karoo where it stayed until Colesburg, where it started raining.
Temp gauge did not move!

After researching AT posts in my earlier owernership days with a locking up box, etc, the biggest problem with AT overheating is old fluid AND/OR the AT filter being replaced with an engine filter or pirate AT filter. The OEM AT filter is a straight through filter with no by-pass valves.

A blocked radiator will also piss the whole cooling system off.
2003 Xec AT
Decat, 57mm SS Cowley freeflow
220l p/h fuel pump
HUCO plug leads
KYB shocks

January 09, 2017, 11:49:04 PM
Reply #2

Stev0

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Drive 10km in thick sand with your shifter in 1st, towing a trailer in 38c heat... ?

Could your car potentially overheat then?
ex Prodrive Xt, X, XT, WRX STI, Outback 3.0R

January 10, 2017, 01:00:27 AM
Reply #3

Durbanboy

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Drive 10km in thick sand with your shifter in 1st, towing a trailer in 38c heat... ?

Could your car potentially overheat then?

You never mentioned that.

Contact George Miller. He has a VAST knowledge of desert travel ;)
2003 Xec AT
Decat, 57mm SS Cowley freeflow
220l p/h fuel pump
HUCO plug leads
KYB shocks

January 10, 2017, 09:38:30 AM
Reply #4

Stev0

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Just talking worst case scenario :D

ex Prodrive Xt, X, XT, WRX STI, Outback 3.0R

January 10, 2017, 01:23:38 PM
Reply #5

sav

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Temp gauge did not move!

That's not surprising - it takes a lot to move it, in fact - it's pretty useless actually. "Normal" is something like 65-95deg.
2007 XT Premium Sportshift (Decat, VF48 @ 1.2 bar, STi TMIC, Chett tjooned, BBK, coilovers, etc etc eish!)

May the Forester be with you...