my mom was using our nissan x-trail for the last two years because her job was far from our home, about 200 kms so the car was over used and one thing was, she went to the car wash and had the engine washed, however my uncle was a mechanic and know a lot about cars but the problem was my mom don't trust him and now we were experiencing overheating when we were driving through the mountains of Antipolo a nearby city. I have no idea what to do!!! HELP!!! i hope someone can advise me ASAP!!! thanks guys..