VW & Audi Coolant Leaks: Why Only G13 Antifreeze Works
VW or Audi Coolant Leak? Here’s What You Must Know Before Topping Off
If your Volkswagen or Audi has a coolant leak, it’s tempting to grab the first bottle of antifreeze you can find—whether it’s green, blue, or orange. But stop right there! To clarify, using the wrong coolant can cause serious, costly damage to your engine.
Why You Should Only Use G13 Coolant in VW and Audi Vehicles
Volkswagen and Audi engines require a specific type of coolant called G13 antifreeze, which is pink or lilac in color. Uniquely, this specialized coolant is engineered to:
- Regulate engine temperature
- Prevent internal corrosion
- Protect against freezing
Mixing G13 with other coolants—like the orange antifreeze used in domestic cars or the blue kind used in many Asian vehicles—can create a chemical reaction that results in a thick, sludgy mess. This contaminated coolant can clog your radiator, heater core, and hoses, reducing flow and increasing the risk of engine failure.
What Happens If You Use the Wrong Coolant?
Using non-G13 coolant in your VW or Audi doesn’t just dilute effectiveness—it can actively damage your engine. Here’s what can happen:
- Clogged heater core: This mini radiator located in your dash is especially vulnerable to blockage. If coolant can’t flow, your heat stops working—and bigger problems are right behind.
- Restricted flow: Thickened coolant reduces circulation, potentially preventing the thermostat or water pump from functioning.
- Overheating risks: In worst-case scenarios, overheating can warp your cylinder head or even lead to complete engine failure.
How to Fix Contaminated Coolant
If the wrong coolant was added to your system, a coolant flush is essential. In fact, multiple flushes may be needed to remove all traces of the contaminated mixture and restore safe operation.
Pro Tip: Always flush the system thoroughly before refilling with G13 coolant to avoid residual contamination.
Final Thoughts: Only Use Pink or Lilac G13 Coolant
Simply put, when it comes to maintaining your VW or Audi, using the right fluids isn’t just a recommendation—it’s a requirement. Stick with OEM-approved G13 pink/lilac coolant to keep your engine protected, your heating system functional, and your repair bills low. Call 803-520-8523 to schedule an appointment.
Das Autohaus specializes in VW and Audi service / maintenance & repair. Learn more about our services here.
We are located at 1202 Two Notch Road Lexington, SC 29073.