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7 years ago

Another thing to think about, if you do not buy and use the premixed antifreeze is the water you use in the radiator, once you get a nice clean system running you should consider using distilled water (buy by the gallon at grocery store), this will minimize the buildup of mineral deposits and help keep the cooling system flowing good. The idea of using distilled water to improve your cooling system has been debated but I have seen many radiators with white mineral deposits that reduce the flow in the radiator and you never really know how much mineral content is in your tap water.

Sources: Do Your Own Research at [url]https://www.google.com/search?q=Distilled+Water+in+Radiator&ie=utf-8&oe=utf-8[/url]

feeffie

7 years ago

As previously mentioned a good cooling system tune up is in order, and hopefully will resolve your problem. If it doesn't, here are some other items that can cause overheating at highway speeds. A partially blocked exhaust system, improper ignition timing, engine running too lean and a blown head gasket are all potential culprits. Good luck.

sabergatomon

7 years ago

You didn't say anything about your cooling system, so I will assume it's stock. It sounds as if you may have some blockage in your radiator. Have it checked at a reputable radiator shop to verify this. If you would like to maintain a "stock" type radiator, they could recore the radiator you have. Also, and I can't stress this enough, install a good mid range thermostat. It will help maintain a good operating temp for your engine. You may also try flushing the system yourself. Prestone makes a good flush and fill kit and will give you a good look at the condition of your cooling system as its being flushed. use a high quality coolant at a 50/50 mix. This will prevent corrosion in the future as well as keeping your engine cool in the summer and frost-free in the winter. I hoped this helped.