Product Description
Sierra antifreeze, propylene glycol - green, 1 gallon.
Used in PCM ZR4, H5, H6 closed cooling systems (not dex cool orange!!!) this is the 'newer' non-toxic PCM switched to around Feb 2018
Starting with 2018 model year boats, and engine serial number 571292, PCM switched to Propylene Glycol (Green). It is very important not to mix these two types of coolants.