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07-13-2019, 11:56 AM | #1 |
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Coolant mix or straight water?
Hi all. I am going to Watkins Glen this week for a HPDE and the temperature is suppose to be in the 90s and since we are all familiar with the overheating issue these engines have, my question is should I put a bottle of water wetter in with the coolant or replace the coolant with straight water? Or better yet water with a bottle of water wetter.
I have ran into only one overheating issue and that was last year at Pocono during ~85-86 degree weather. I am FBO but I run Map 2 during track days. The DCT also has it's own cooling line now instead of being integrated with the radiator.
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07-13-2019, 02:41 PM | #2 |
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Yes water itself has the highest heat capacity and you can definitely run straight distilled. Including some of that additive will probably reduce corrosion / rust.
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07-14-2019, 02:13 PM | #3 |
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Yeah that's what I am going to do. I'll be sure to change it out before it gets cold out too.
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07-19-2019, 06:41 PM | #5 |
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A mechanic (who is also an amateur racer) told me that pure water isn't a great idea because there is no lubrication for the water pump. However you can get better thermal trasfer by using higher % of water in the coolant mix.
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07-29-2019, 07:43 PM | #6 |
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I've tried running distilled water + water wetter; didn't notice any difference in track time water temperatures, so I switched back to BMW coolant. Engine is all stock.
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