Towing my 5x8 single axle V-nose box trailer (maybe 1000 lbs). with maybe 500 lbs in the trailer. running down the road at 55mph AC on, maybe 80 outside, mild hills. about 12 miles down the road the dash starting "dinging" and I discover that the temp gauge is pushing near the top of the gauge. I shut off the AC and pulled over, cooling fan was on, I put trans in N and temps went back down. I went about 2 more miles pulled into gas station to get water. Once I could open system it was only down 1/2 gallon but the LS top of radiator split Pissing out pretty good. I have had problems with temp rising pulling this trailer in the past using OD, and I forgot to lockout OD. maybe that was the cause. But after leaving gas station (now OD locked out, and AC off) the temps swung pretty bad. 1/2 to 3/4. but than all of a sudden leveled out (like thermostat was stuck) A couple weeks ago I did put a non Jeep thermostat in it when I was installing an AC delco water pump and belt tensioner. After about 2 hours down time to unload and setup furniture I returned home but I kept OD locked out and it never pulled over 1/2 way. a couple miles before home I switched to OD on and temps started to rise again so maybe the trans heat is causing this. but the way the temps swing after this happened I believe the thermostat might have stuck than opened. The aftermarket thermo is coming out and Jeep going back in when I replace the radiator. So now I also need a radiator. I see the alu one on Ebay for around $70 I see Murry at oreilly is like $160. advanced is 150 with lifetime warranty autozone 160 with lifetime Rock wants $232 for Mopar rock has the denso (heart next to it) for $95. I seem to remember saying Mishimoto, they are 96 on amazon what do you recommend? This jeep sits a lot in a storage lot (with 50w solar on it). But I need it to tow my boat (new boat that I just ordered. The boat and trailer is 2200 lbs from storage to lake is 3.5 miles so I think the jeep can do this last question, would an aftermarket fan in front of radiator help? maybe a switch under dash to turn it on when towing?