Honda Type 2 Anti-Freeze Engine Coolant OL999-09011

Honda Genuine Type 2 Blue Coolant - Pre-Mixed 50/50 (1 Gallon)

Your Honda or Acura needs the right coolant. Not generic green stuff from AutoZone. Not pink Toyota coolant. Honda Type 2 blue coolant. This is part number OL999-9011 and it's the exact coolant Honda dealers use when they flush your system or top you off. It's pre-mixed 50/50 so you're pouring it straight from the jug. Don't add water. Don't dilute it. The concentration's already set for freeze protection down to -34°F and boil protection up to 265°F. It's got Honda-specific corrosion inhibitors that protect aluminum heads, water pumps, radiators, and heater cores against the electrochemical corrosion that eats Honda cooling systems from the inside when you run generic coolant. This fits every Honda and Acura built from 1976 through 2018. Civic, Accord, CR-V, Pilot, Odyssey, Fit, Integra, TL, TSX, MDX, RDX, all of them. If your car's a Honda or Acura and it was built between 1976 and 2018, this is what goes in it.

Here's Why Generic Coolant Kills Honda Cooling Systems

Honda engines are mostly aluminum. Aluminum heads, aluminum blocks on some engines, aluminum radiators, aluminum water pump housings. When you mix different metals in a cooling system with coolant flowing between them, you get galvanic corrosion. That's electrochemical corrosion where the metals are acting like a battery and eating each other. Generic coolants don't have the right inhibitor package to stop that in Honda engines. We've seen radiators with pinhole leaks from the inside out, water pump housings corroded through, heater cores clogged with corrosion scale. All from running the wrong coolant. Honda Type 2 coolant's got corrosion inhibitors engineered specifically for the metal combinations in Honda and Acura engines. It stops the galvanic corrosion before it starts. Your cooling system stays clean. Your water pump doesn't develop internal leaks. Your radiator doesn't spring pinholes after 80,000 miles. Run the right coolant and your cooling system lasts the life of the car. Run generic coolant and you're replacing parts in five years.

Pre-Mixed 50/50 - Don't Add Water

This coolant's pre-mixed 50/50. That means it's already diluted with distilled water at the factory. You're opening the jug and pouring it in. Don't add water. Some people think they're saving money by buying concentrated coolant and mixing it themselves. That's fine if you're using distilled water and you're measuring the ratio exactly. Most people use tap water and they eyeball the mix. Now you've got hard water minerals in your cooling system and the concentration's off. Too much water and you lose freeze protection. Too little water and you lose heat transfer. The 50/50 mix gives you -34°F freeze protection and 265°F boil protection. That's the spec Honda engineered the cooling system around. If you dilute it, you're throwing off the protection and you're voiding the coverage spec. Just use it straight from the jug like Honda intended.

Blue Color Coding - Don't Mix It with Other Coolants

Honda Type 2 coolant's blue. That's not just for looks. The color coding lets you verify at a glance that the correct fluid's in the system. If you pop your radiator cap and the coolant's green, somebody put the wrong stuff in there. Green's Honda Type 1 coolant for older Hondas built before 1976 or it's generic universal coolant. Pink's Toyota or Subaru OEM coolant. Don't mix blue Type 2 with green Type 1. Don't mix it with pink Toyota coolant. Don't top it off with generic orange Dex-Cool or universal yellow coolant. Mixing coolants creates chemical reactions that break down the corrosion inhibitors and form sludge. You're clogging your radiator, killing your water pump, and destroying the protection you paid for. If your coolant's not blue, flush the system completely and refill it with Honda Type 2 blue. If it is blue, top it off with more Honda Type 2 blue and you're good.

5-Year / 60,000-Mile Service Interval

Honda Type 2 coolant's a long-life formula. Honda specs a 5-year or 60,000-mile flush interval whichever comes first. That's way longer than old-school green coolant which needs flushing every 2-3 years or 30,000 miles. The extended service interval's because the inhibitor package doesn't deplete as fast. You're not flushing your cooling system every other oil change. You're doing it once every five years if you're following the service schedule. After 60,000 miles or five years, the inhibitors are depleted and you need to flush the system and refill it with fresh coolant. Don't push it past that. We've seen people run the same coolant for 10 years and 150,000 miles because "it still looks clean." It doesn't matter what it looks like. The inhibitors are gone and your cooling system's corroding from the inside.

What You Get

• Honda Genuine Type 2 blue coolant - part number OL999-9011
• Pre-mixed 50/50 (ready to use, do NOT add water)
• 1 gallon (3.78 liters)
• Freeze protection to -34°F
• Boil protection to 265°F
• Ethylene glycol base with Honda-specific corrosion inhibitors
• Blue color coding (do NOT mix with green, pink, orange, or yellow coolants)
• 5-year / 60,000-mile service interval
• OEM coolant used by Honda dealers
• Replaces superseded Honda part numbers CU08730, OL999-9001, OL999-9002, OL999-9012

Fits These Cars

• All Honda and Acura vehicles built 1976-2018
• Honda: Civic, Accord, CR-V, Pilot, Odyssey, Fit, HR-V, Ridgeline, Element, S2000, Insight, Crosstour
• Acura: Integra, RSX, TSX, TL, RL, MDX, RDX, NSX, ILX, TLX, RLX

Note: Pre-mixed 50/50 - do NOT dilute with water (adding water throws off freeze/boil protection and voids spec). One gallon treats approximately 2-3 gallons of cooling system capacity (most Honda/Acura cooling systems hold 6-8 quarts so you'll need 2-3 gallons for a complete flush). Freeze protection to -34°F, boil protection to 265°F. Blue color coding - do NOT mix with green Type 1 Honda coolant, pink Toyota/Subaru coolant, orange Dex-Cool, or yellow universal coolant (mixing creates chemical reactions that break down inhibitors and form sludge). Honda-specific corrosion inhibitor package protects aluminum heads, blocks, radiators, water pumps, and heater cores against galvanic/electrochemical corrosion. 5-year or 60,000-mile service interval (flush and refill after this point even if coolant looks clean - inhibitors are depleted). OEM coolant used by Honda dealers for flushes and top-offs. Replaces superseded part numbers CU08730, OL999-9001, OL999-9002, OL999-9012. Fits all Honda and Acura 1976-2018. Contains ethylene glycol (California Prop 65 warning, keep away from children and pets, toxic if ingested). Made by Honda.