When purchasing an antifreeze, pay attention to the fact that the product is delivered in transparent cans with good, high-quality plugs. Such containers will help identifying the fluid defects: it is only necessary to look at the bottom of the can in light. If you see the sediment in the can, it’s not worth purchasing the antifreeze.
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There are several forms that meet the requirements of the classification of the US Department of Transportation: DOT 3, DOT 4, DOT 5.1, and separately from them DOT 5 and DOT 5.1 / ABS, which differ radically from other categories by composition. FMVSS 116 also requires that DOT 5 fluids should be dark red, while DOT 3, DOT 4 and DOT 5.1 should be from colorless to amber.
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