jettaboy1
New Member
Number of posts : 3
Home City : sydney
Registration date : 2021-07-27
 | Subject: Transmission Cooling  Tue Aug 17, 2021 1:45 am | |
| Hi all.. What is you opinions on if the transmission would run cooler or not, or if it is wise!
My 96 3.0 4x4 Auto has a Factory square Trans cooler in front of radiator... So The Oil hose runs from the hot outlet of trans... to Radiator oil cooler . Then to External cooler and back to transmission.
Would it run Cooler if you Bypassed the Radiator and just ran it through the External cooler. ?
( live in Oz hot climate. )
Thanks | |
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Pete_nz
Been here a while
Number of posts : 267
Home City : Wellington, New Zealand
Model and year : '95 4WD Auto 3.0TD TripleMoonRoof
Registration date : 2010-02-27
| | Subject: Re: Transmission Cooling Tue Aug 31, 2021 12:30 am | |
| From lots of trawling the 4WD, Surf & Prado forums and my own experience, I don’t think it’s wise to mess with Toyota’s fundamental design. With the separate trans cooler it sounds like you have a hot-climate version anyway (Japan itself has a climate variation from sub-tropical in the south to almost sub-arctic in the north and vehicles are often have slightly different spec as per that from new.)
A large part of the role of the radiator heat exchanger is actually to warm up the trans fluid (that’s why Toyota/Aisin autos don’t kick into OD until the engine reaches operating temp) not just cool - it’s to maintain.
If you’re getting trans overheating warning light - which is usually from towing heavy loads uphill at highway speeds - the only mod I’d look into would be perhaps a larger trans radiator. | |
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