Gday Lads and Ladette's

My patrol does not seem to be a fan of towing especially in OD 100kmh can watch that temp gauge climb but if i switch the OD off the effect is immediate and she comes straight back down to normal temps. this happens if weight is generally anything over 1000 kg in load flat land or a hill ( i live in Darwin not many hills here). Have also had it happen once with a massive head wind whilst not towing.

My tyres are 305/70R16 no spotties on bull bar and no winch so shes getting airflow. i have no after market gauges what so ever and she is completely stock other then a provent catch can.

It has been like this since the day i bought it this time last year. it happy and runs well unless she tows.

Please help and note that money is tight for me.