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I overheated my car, drove in the red for 10 miles but it kept working fine for a month, then, while temp at 190 i started losing fluid thru release valve so bought a new cap, still lost fluid but dont know where, mechanic said is not blown gasket and changed radiator, i am still losing about a quart every 100 miles, dont see water in oil or oil in water, nor steam thru pipe, mechanic said I have air in cooling system but did nothing about it, any ideas ?
How did your car originally overheat? A quart every 100miles is quite substantial. Definitely check all coolant lines, lines to your inside heater and pull the spark plugs. Check the face of the plugs and evaluate how your vehicle burns fuel. Do a compression test and a leak down test on your vehicle. I am leaning toward some head damage. BTW, a quart of coolant every 100miles would mean an awful lot of air in your system. Have your vehicle reevaluate by another mechanic.
