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International Automotive Technicians Network
Re: Extended Life Coolant Testing/Replacement
Posted to HD/Fleet Forum on 1/7/2022

Hi David,

This is a 'pusher' motorhome from what you describe.

Antifreeze does not wear out; it gets contaminated due to corrosion from the metals used in the vehicle cooling system and engine. Test strips identify when the acidity in the coolant is too hi... Login to read more.