Hi...i have a 90 defender with a 3.5efi engine. I have been told the engine is getting on a bit but she keeps on going and the more she gets pushed the better she seems to get. However, whe off roading or pottering around town on a hot day the gear box area knocks out a massive amount of heat to the extent that i actually start sweating. Anyone got any clues out there? I'm assuming its nothing to do with the engine as the temperature gauge stays pretty steady.