I actually tt Peak Tech Support today about the 10X coolant (in between my rebate questions), and they assured me it has NO 2-EHA, & has sebacate AND phosphate inhibitors, and the tech I talked to assured me they had not heard of any issues using it (I stated that I wouldn’t use it in a diesel application, the only one I have left gets green & SCAs [DCA-2 Napakool] in it).