Super Tech 50/50 Antifreeze/Coolant Pre-Mix – Walmart.com.

Does Walmart have radiator fluid?

Super Tech 50/50 Antifreeze/Coolant Pre-Mix – Walmart.com.

Does it matter what radiator fluid I use?

Well, you use the coolant that is specified in your owner’s manual. If you just need to top it up, the recommendation is still the same, however it is unlikely to cause any serious problems if you add a litre of a different type of coolant, as long as you follow the manufacturer’s maintenance schedule.