Ideal for Both gasoline and diesel enginesĮngine Ice TYDS008-02 High Performance Coolant.Zerex G05 Phosphate Free Concentrate Antifreeze/Coolant 1 GA Best Car Coolant 2023 Comparison Table Photo But what if I told you that there are new coolants on the market that are better than ever at keeping your engine running at optimal temperature? In this post, we’ll take a look at some of the best car coolants of 2023 and how they can help keep your vehicle running smoothly. You pop the hood, refill the coolant, and assuming everything is in good working order, you never give it another thought. If you’re like most drivers, you probably take your vehicle’s cooling system for granted.