Hi all , I have a 1999 3.0 litre 5l hilux single cab , 285000ks , when I'm driving on the highway on 100 or 105 which my foot is pretty much planted lol , the temp guage reads a little over half and eventually goes back down to just under half when I back off to 90 , I took it to mechanic where he changed the radiator checked for blown head gasket etc and also Did my timing and a few other things , he assured me it wasn't the head or anything just the radiator , it's not overheating as bad but still sits up over half not alot but yea if over 100 like 105 or so he also fully serviced it. Please help , also it has a roo rack on the back not that it should make a difference as I shot in a old 81 and neverissed a best Thank you Jason