SOME VEHICLES MAY EXHIBIT A CLUNK NOISE FROM THE ENGINE COMPARTMENT WHEN DRIVING OVER ROUGH ROADS OR OVER A SPEED BUMP. THE NOISE MAY OCCUR IN AREAS OF HIGH AMBIENT TEMPERATURES. DUE TO HIGH HEAT, THE LUBRICANT INSIDE THE NO. 3 ENGINE MOUNT RUBBER (A) MAY BECOME INEFFECTIVE, CAUSING A STICK-SLIP NOISE BETWEEN THE CASING AND THE RUBBER, HOWEVER, THERE IS NO SEEPAGE FROM THE ENGINE MOUNT. THE ENGINE MOUNT RUBBER USES A NEW TYPE OF LUBRICANT TO ELIMINATE THIS CONCERN.