I got a 1999 LEXUS LX470, 4.7l 2UZ-FE engine, AT, and it got 193000 miles on it. It still runs well. But my salon heater didn’t blow that much heat. It is freezing in Mongolia these days. Reaching -43F some nights. So I had the salon radiator cleaned and changed the antifreeze altogether. Heater is working fine- nice hot air comes out, no problem. Then they said I should add some more antifreeze in the following morning before I left my garage. Next morning when I opened the radiator cap the red antifreeze turned to rusty color. What do I do? I got a photo of it but don’t know how to insert it here.
Edit your opening post, then insert photo using the attach files option.
With the high mileage, you probably have considerable corrosion residue in the system. I would have it flushed again.
