2018 Duramax Coolant Surge Tank
2018 Duramax Coolant Surge Tank . Open the lower side surge tank cap ¼ of a turn. I will also check today for air bleed ports at the thermostats, if it has them i'll attempt to. Polaris Slingshot Aluminum Coolant Surge Tank by DDMWorks from www.slingmods.com Link to comment share on other sites. My first attempt to create youtube video. The radiator surge tank cap that vents pressure in the event of excessive cooling system pressure is located on the lower outboard side of.