Heisenblerg Posted January 14, 2021 Share Posted January 14, 2021 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 comment Share on other sites More sharing options...
chenbeier Posted January 14, 2021 Share Posted January 14, 2021 (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, 2021 by chenbeier 1 Link to comment Share on other sites More sharing options...
Heisenblerg Posted January 16, 2021 Author Share Posted January 16, 2021 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 comment Share on other sites More sharing options...
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