I need help with my 1989 Toyota pick-up 22r engine. Engine ran hot. I drove it home stopping to let cool many times. Changed thermostat. Worked good but a whining noise, when I first started it, came from the front of the engine….
I saw your answer to someone below after searching for a good block sealer: “If they DO suspect a blown head gasket or cracked block you might want to try a can of KW Engine Block Seal additive you can buy at your local auto supply. Drain out the coolant, add the can of additive to your radiator and drive the car for about 500 miles, then drain out the water/additive and install the proper mix of coolant and water to the radiator.