Have you taken the engine cover off and really looked around inside the engine bay from the top and the bottom after you have driven it for a while? Have you kept up on getting your cooling system flushed?My 2006 Tribute 6 cyl smells like it is overheating....no oil loss, no coolant leaks, no warnings, only normal on gauges. But it smells like coolant leak or oil on manifold. Any suggestion?