Moderator: volvite
at those temperatures, do you still think a fan is necessary?Budrbean wrote:I did about a 15 mile drive today at highway speeds and the highest I saw it get was around 165 degrees. Im guessing the fluid is gonna read hotter in this location so Im expecting to see it around 180 at most times in normal driving.
I doubt by-pass changes much under towing condition. coolant enters radiator around 200F when engine is completely warmed up. it looks like with towing, transmission fluid temp is going to be 180F +, so radiator will neither cool or warm transmission fluid significantly.eieio wrote:It sure would be nice to see some comparative pre-bypass figures
The pre-bypass figures would be the same. The temperatures Budrbean is reading is at the transmission output, before the radiator cooler.It sure would be nice to see some comparative pre-bypass figures
The fan should not make a difference at 60mph. The purpose of the fan is to generate airflow when no airflow is present (vehicle stopped or traveling slow). At 60mph, the trans cooler is already getting the maximum amount of airflow across it.I would like to see if fan makes a difference while towing at 60MPH.
Ideally for any automatic transmission, 180 or below would be perfect. It is said that if you keep temps below that at all times, you can actually get 100,000 miles out of your trans fluid. Every 20 degrees above that you can cut that mileage in half. 220 starts to enter the danger zone and constant temps above 240 will start to deteriorate the seals.pawjr74 wrote:Does anyone know what is the max trans fluid temp considered safe for the Pathfinder?
are you saying I shouldn't turn on the fan, even if I was towing at 100F weather going uphill, as long as I am at freeway speed ?Fossilfuleburner wrote: The fan should not make a difference at 60mph. The purpose of the fan is to generate airflow when no airflow is present (vehicle stopped or traveling slow). At 60mph, the trans cooler is already getting the maximum amount of airflow across it.
I went to a local Ace hardware/building supply store. They were in the plumbing section with all the brass fittings. Im told Lowes and Home Depot carry them but I havent checked.bellwilliam wrote:op:
where did you buy the adapter (with 1/8" NPT) ? everywhere I looked online is 5/8" hose adapter. not 3/8".
thanks