Salam to all members and Shab - e - Qadar mubarik as well. I want to ask that is there some kind of heat issue in cuore with havoline 20W-50? cox my car was working normal untill mileage reached 2200 after oil change cox after 2200 car temp started rising temp guage is at middle but alot of heat in engine room and water is being boiled out of coolant bottle I even got the radiator serviced but still the issue is here.. should i avoid using havoline in my car? what about zic oil?