Can I use propylene glycol with the Cooling Pump Kit? We do not suggest using glycol with the Cooling Pump Kit The pump is not designed to handle a liquid of that viscosity, and it is therefore not recommended that glycol be added in more than 5%. Related articles Could I be getting a metallic 'off-taste' in my beer from the fermenter? Estimated Delivery Time - New Zealand Why is the Glycol Chiller set to -4°C (24.8°F) / -4.5°C (23.9°F) My beer keeps getting infected - what can I do? What is the maximum temperature of wort that I can transfer into GF30?