Transmission Oil Cooler
 

I have at 1998 Montero Sport LS 4WD with the 3.0L engine and automatic transmission. Does anyone know if a transmission oil cooler is standard equipment on this model? I was looking around for one to install and found a couple of pages on the web that indicated it may have one factory installed. I just installed a trailer hitch and don't want to shorten the transmission life when towing.

Thanks in advance.