Not all coolant is the same, and color is not a reliable guide
Walk down the coolant aisle of any parts store and you will find jugs in green, orange, pink, yellow, blue and purple, several of them labeled as suitable for all makes. That is where a lot of cooling system trouble begins.
Coolants differ in the chemistry they use to protect the metal and rubber inside the engine. Vehicle makers specify a particular type for a reason: it is matched to the materials in that system. Mixing types, or topping up with the wrong one, can weaken that protection. In some combinations it can form deposits or sludge that clog the narrow passages in the radiator and heater.
The trap is color. Manufacturers do not all use the same colors for the same chemistry, and some coolants fade or change color with age. Two jugs that look alike may not be alike, and two that look different may be compatible.
How to get it right
- Use what the manual specifies. The owner's manual names the coolant type, and many reservoirs or caps are labeled too.
- Top up with the same type, or with water only in an emergency, and say so at the next service.
- If you do not know what is in there, tell the store. Mixed or doubtful coolant is something to have tested, and a drain and refill with the correct type may be the sensible fix.
Signs worth booking for
A level that keeps dropping, brown or murky coolant, a temperature gauge that climbs in traffic or on long grades, or residue around the reservoir or radiator. The national cooling system page covers what to do if the gauge reaches the red.
A fault that turns out to be the engine itself is engine repair, and a weak A/C that only struggles when the engine runs hot may be related, so A/C service is worth mentioning too. Both are here.
Other stores nearby
De Soto and Washington also offer cooling system service.
About this store
The Fenton store runs seventeen services and is managed by Daniel Garcia.
See the national cooling system page for all 33 locations.