Heisenblerg 0 Posted January 14 Share Posted January 14 trying to decide if i can mix Peak Blue "European" OET coolant in with the factory coolant for my 2012 Volvo S60, which i think might be pentofrost nf. the first has ethylene glycol diethylene glycol water sodium benzoate denatonium benzoate and the second has: ethylene glycol 2,2'-oxybisethanol disodium tetraborate pentahydrate any negative interactions that will mess up my car? Link to post Share on other sites
chenbeier 17 Posted January 14 Share Posted January 14 (edited) I dont see generally a problem. The main compounds of both coolants are the same. But I would test first a small amount in a beaker to see there is no precipitation. To mix borate with benzoate is maybe a problem. Edited January 14 by chenbeier 1 Link to post Share on other sites
Heisenblerg 0 Posted January 16 Author Share Posted January 16 On 1/14/2021 at 12:20 AM, chenbeier said: To mix borate with benzoate is maybe a problem. those are the two that I was most concerned about Link to post Share on other sites
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