The 2018 Volkswagen Tiguan requires G13 coolant, a glycerin-based antifreeze specifically designed for VW vehicles. Using the correct coolant is crucial for maintaining your Tiguan’s engine health and preventing costly repairs. This guide will cover everything you need to know about G13 coolant for your 2018 Tiguan.
Why the Right Coolant Matters for Your 2018 Tiguan
Coolant plays a vital role in regulating your engine’s temperature, preventing overheating, and protecting against corrosion. Using the incorrect coolant type can lead to:
- Engine Overheating: Incorrect coolant can hinder heat transfer, leading to engine damage.
- Corrosion: The wrong coolant can corrode engine components, including the radiator, water pump, and engine block.
- Water Pump Failure: Inadequate lubrication from the wrong coolant can damage the water pump’s seals, causing leaks.
- Clogged Cooling System: Incompatible coolants can create sludge and deposits, restricting coolant flow and causing overheating.
Understanding Volkswagen G13 Coolant
Volkswagen introduced G13 coolant in 2013 as a more environmentally friendly alternative to previous G12 coolants. Key features of G13 coolant include:
- Glycerin-Based: Unlike older glycol-based coolants, G13 uses glycerin, a byproduct of biodiesel production, reducing its environmental impact.
- Superior Corrosion Protection: G13 offers excellent protection against corrosion and cavitation, extending the life of your engine’s cooling system.
- Long-Life Performance: G13 is designed for long-lasting performance, reducing the frequency of coolant changes.
- Compatibility: G13 is compatible with older G12++ and G12+ coolants, but mixing may slightly reduce corrosion protection. It’s always best to stick with G13 for optimal performance in your 2018 Tiguan. Typically purple or violet in color.
Identifying and Topping Off Coolant in Your 2018 Tiguan
You can usually find the coolant type stamped on the expansion tank. However, for a 2018 model, G13 is the recommended type. To check your coolant level:
- Ensure the engine is cold.
- Locate the coolant expansion tank. It’s usually a translucent plastic tank with minimum and maximum level markings.
- Check the coolant level. It should be between the minimum and maximum marks.
- If low, add a pre-mixed G13 coolant solution specifically designed for VW vehicles. Never use pure concentrate; always dilute it with distilled water according to the manufacturer’s instructions. Using tap water can introduce minerals that can harm your cooling system.
When to Change Your 2018 Tiguan’s Coolant
Volkswagen recommends changing your Tiguan’s coolant every 30,000 to 50,000 miles, or if you notice any performance issues or warning lights.
The Coolant Warning Light
If your Tiguan’s coolant warning light illuminates, pull over immediately and turn off the engine. This light indicates overheating or low coolant levels. Continuing to drive can cause severe engine damage. Allow the engine to cool completely before checking the coolant level. If the problem persists, consult a qualified mechanic.
Choosing the Right Coolant for Your 2018 Tiguan
Always use genuine Volkswagen G13 coolant or a reputable aftermarket brand that meets VW specifications. Avoid using generic coolants or those designed for other vehicle makes, as they may not provide adequate protection for your Tiguan’s engine. Consult your owner’s manual for specific recommendations. Investing in the correct coolant is a small price to pay for the long-term health and performance of your 2018 Volkswagen Tiguan.
