Edmunds Answers

Voted Best Answer

  • avatar karjunkie 04/16/09 1:54 pm PST

    Modern car temperature gauges are notoriously innacurate. Unless you have an overheating problem, the fact that the gauge needle goes to 5/8 on the gauge does not mean you have a problem. The only true reading is when it goes into the red which means you are overheating. The fact that the needle goes up when you are stopped is normal, as no air is being pushed through the radiator to provide cooling. If you want an additional modicum of cooling, you can add Redline Water Wetter to the coolant that will reduce the temperature about 5 degrees. You can also go from a 50.50% blend of coolant to 60% water, which will also bring down the temperature by about another 5-10 degrees. My advice, however, is simply do nothing and don't worry about small fluctuations on the gauge. Good luck!

Answers

  • karjunkie 04/16/09 1:54 pm PST

    Modern car temperature gauges are notoriously innacurate. Unless you have an overheating problem, the fact that the gauge needle goes to 5/8 on the gauge does not mean you have a problem. The only true reading is when it goes into the red which means you are overheating. The fact that the needle goes up when you are stopped is normal, as no air is being pushed through the radiator to provide cooling. If you want an additional modicum of cooling, you can add Redline Water Wetter to the coolant that will reduce the temperature about 5 degrees. You can also go from a 50.50% blend of coolant to 60% water, which will also bring down the temperature by about another 5-10 degrees. My advice, however, is simply do nothing and don't worry about small fluctuations on the gauge. Good luck!

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