The 2004 Acura TL uses Honda/Acura Genuine Long-Life Coolant Type 2, an ethylene glycol–based coolant, best used as a 50/50 mix with distilled water (or purchased pre-mixed 50/50). This is the recommended option for maintaining the cooling system on this model.
In more detail, the TL's 3.2-liter V6 relies on a specific coolant specification to protect the radiator, heater core, and water pump. Honda/Acura designates Type 2 long-life coolant for this era, and using a non-approved formula can lead to corrosion or gasket issues over time. When topping up or performing a full drain-and-fill, choose a product labeled Honda Type 2 or Honda/Acura Genuine Long-Life Coolant, and follow the dilution instructions on the bottle. Avoid Dex-Cool or other brands not approved for Honda/Acura vehicles, as compatibility problems can arise.
Choosing the right coolant for your TL
Before listing recommended coolant options, here is a quick guide to what you should buy and how to use it.
- Honda/Acura Genuine Long-Life Coolant Type 2 (blue), ethylene glycol–based. Available premixed (50/50) or as concentrate to be diluted with distilled water per the label.
- Coolants labeled as “Type 2” or “Honda/Acura Compatible” from reputable brands, ensuring compatibility with Honda/Acura vehicles.
- Avoid Dex-Cool (GM) and any coolant not explicitly approved for Honda/Acura engines, as using the wrong formula can cause corrosion or seal damage.
When in doubt, consult the owner's manual or a dealer to confirm compatibility and correct dilution. Using the wrong coolant can lead to cooling system damage or gasket issues over time.
How to perform a drain and refill (brief)
If you plan to replace the coolant, use the recommended Type 2 coolant and a 50/50 mix with distilled water. The basic steps are below, but always follow the service manual or a professional mechanic's guidance for your vehicle.
- Drain the old coolant from the radiator and engine block as described in the service manual.
- Flush the cooling system to remove old coolant and contaminants.
- Mix coolant 50/50 with distilled water if using concentrate, or pour the premixed 50/50 into the reservoir.
- Start the engine, bring to operating temperature, check for leaks, and top off to the proper level.
After the procedure, monitor the coolant level and color until it stabilizes. Dispose of old coolant properly and keep spare coolant out of reach of children and pets.
Common questions
Is Dex-Cool compatible with a 2004 Acura TL?
No. Dex-Cool is GM-specific and is not recommended for Honda/Acura engines, including the 2004 TL, as it can cause gasket issues and corrosion over time.
What color should the coolant be?
For this era, Honda Type 2 long-life coolant is typically blue. Always rely on the bottle labeling and OEM recommendations rather than color alone to determine compatibility.
Summary
The 2004 Acura TL requires Honda/Acura Genuine Long-Life Coolant Type 2, an ethylene glycol–based coolant. Use a 50/50 mix with distilled water, and choose a product clearly labeled as Honda Type 2 or Honda/Acura compatible. Avoid Dex-Cool or non-approved blends. For maintenance and replacement, follow the owner's manual or consult a dealer to ensure proper coolant type and dilution.
Which coolant works on an Acura TL?
Prestone Asian Vehicles (Blue) antifreeze+coolant is specially designed to work with these specific vehicles: all Honda and Acura, Nissan 2009 and newer, Infiniti 2009 and newer, Subaru 2009 and newer. Prestone's Antifreeze+Coolants are designed to the highest standards using state of the art technology.
What type of coolant does Acura use?
Acura Anti-Freeze/Coolant - Type 2. Genuine Acura Anti-Freeze/Coolant - Type 2 has been developed for long lasting protection.
What kind of coolant does a 2004 Acura TL take?
Pentosin – Pentofrost A3 HOAT Phosphated Asian 50/50 Prediluted Antifreeze / Coolant – 1 Gallon (Part No. 8115207)
Is Honda coolant green or blue?
Honda Long Life is one of the most common Honda antifreeze coolant products and usually comes in a blue color for more modern vehicles; however, certain older Honda models may use green-colored coolant. Please consult a Honda specialist for the most precise product if you plan to replenish your coolant levels at home.