I have a 98 Mack with a 427. Everytime I let it idle it shoots anti freeze out the over flow. But when I drive it, it runs fine and stops shooting anti freeze out. Just when it idles for...

Mack Trucks

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kracer58

I have a 98 Mack with a 427. Everytime I let it idle it shoots anti freeze out the over flow. But when I drive it, it runs fine and stops shooting anti freeze out. Just when it idles for 4 or 5 minutes.

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