BMW R1200RT Coolant Properties, Capacity, Mixing Ratio

Recommended options include extended-life OAT coolants that meet BS6580 and HOAT (Hybrid OAT) coolants meeting G11, G12+, and G13 industry standards.

BMW recommends Eni Anti-freeze Evo DE for their R1200RT motorcycles. This Anti-freeze is aluminum-compatible. Eni Anti-freeze Evo DE doesn’t have borate, nitrite, amine, and 2-ethylhexanoic acid(NAP-free).

The Anti-freeze and distilled water mixing ratio is 1:1 or 50/50 for the BMW R1200RT.

BMW R1200RT Coolant Recommendations

BMW recommends using their own BMW Motorrad Coolant for the R1200RT.

This OAT coolant contains long-life corrosion inhibitors tailored specifically for BMW motorcycles. Key features include:

  • Protection against frost and overheating
  • Corrosion protection for all metals in the cooling system, especially aluminum-compatible.
  • A long service life of up to 100,000 km
  • Use a NAP-free anti-freeze that’s devoid of borate, nitrite, amine, and 2-ethylhexanoic acid.

The blue-colored coolant provides anti-freeze protection up to -35°C.

BMW also approves the use of BASF Glysantin® Protect Plus/G40® coolant which meets the G11 industry specs.

When topping up, use coolant from bottles marked BMW, G11, G12+, or G13.

BMW R1200RT Coolant Type

The BMW R 1200 RT model years 2014-2018 is compatible with Eni Anti-freeze Evo DE. Eni Anti-freeze Evo DE is a multi-functional coolant based on Ethylene Glycol.

This coolant is formulated without borate, nitrite, amine, and 2-ethylhexanoic acid.

Notably, Eni Anti-freeze Evo DE serves as a modern replacement for previous Si-OAT generation coolants. This anti-freeze makes the coolant aluminum-compatible.

BMW R1200RT Coolant Capacity

The total coolant capacity for the BMW R1200RT is approximately 1.5 liters when the system is completely drained and refilled.

To check the coolant level, ensure the motorcycle is upright and the engine is cold before inspecting the sight glass on the expansion tank.

The coolant level should be between the MIN and MAX marks on the tank.

If the coolant level drops due to evaporation over time, top up to the MAX mark using the recommended BMW or industry-approved coolant.

Do not overfill beyond the MAX mark.

BMW R1200RT Coolant Mixing Ratios

The correct anti-freeze and distilled water mixing ratio is 1:1 or 50/50 for the BMW R1200RT.

This 50% concentration provides optimal corrosion protection and anti-freeze capability down to the recommended -35°C temperature.

Only use distilled water or deionized water to prevent mineral deposits and buildup.

Never exceed more than 70% concentrated anti-freeze in the coolant mix, as this can impair heat transfer.

Always check mixing ratios using a refractometer rather than a hydrometer.

BMW R1200RT Coolant Specifications

BMW R1200RT Coolant Change Intervals

BMW recommends changing the engine coolant every 2 years or 30,000 km (18,600 miles), whichever comes first.

Coolant may need to be changed more frequently if contaminated from leaks or mixing incompatible types.

You may need to change coolant more frequently if the motorcycle is used often in stop-and-go traffic or cold weather.

When changing coolant, flush the system thoroughly before refilling with fresh, pre-mixed BMW or compatible fluid to specification.

BMW R1200RT Coolant Properties

BMW Motorrad Coolant or equivalent G11/G12+/G13 HOAT fluids have well-balanced properties to maximize performance and component longevity.

  • Anti-freeze protection down to at least -35°C
  • Anti-boil protection up to +135°C
  • Buffered organic acid inhibitors to prevent corrosion
  • Silicate-free to avoid silicate gel precipitation
  • Biodegradable quality per CEC test method

Together these properties provide year-round protection against temperature extremes to avoid expensive engine damage.

BMW R1200RT Coolant Issues

2014 BMW R1200RT motorcycles with mileage above 32,000 have experienced coolant leaks originating from the joint between the lower radiator hose and engine. It could be due to the faulty 21.5X2 O-ring seal.

Riders have reported coolant leaks from the weep hole on the left side as well.

BMW initially stated this was normal but advised riders to monitor it, as the leak has resolved itself after a few thousand miles in some cases.

If experiencing coolant leaks, especially under warranty, R1200RT owners should consult their dealer.

While R1200RT riders cherish their bikes, BMW Motorrad’s handling of coolant leak issues has raised dissatisfaction regarding transparency, empathy, and communication.

R1200RT Coolant Capacity1.5 liters
R1200RT Coolant TypeOAT coolants that meet BS6580 and HOAT (Hybrid OAT) coolants meeting G11, G12+, and G13 industry standards.
R1200RT Coolant RecommendationsBMW Motorrad
Protect Plus/G40®
R1200RT Coolant Mixing Ratio1:1
R1200RT Coolant Change IntervalsEvery 2 years or 30,000 km/18,600 Miles
Anti-freeze protectionUp to -35°C
Anti-boil protectionUp to +135°C

BMW R1200RT Cooling System Maintenance

Regular cooling system maintenance prevents overheating issues and corrosion damage over time. Key maintenance tips include:

  • Checking coolant levels before each ride when the engine is cold
  • Visually inspecting hoses and gaskets for leakage annually
  • Replacing worn or cracked hoses every 4 years/30,000 miles
  • Flushing the system and replacing coolant every 2 years/30,000 miles

See your BMW dealer annually and before long trips to have them inspect all components.

Top up using only distilled water between complete fluid changes when coolant levels drop slightly over time.

Using the recommended anti-freeze and diligent system monitoring is key for longevity.

BMW R1200RT Coolant Safety Tips

Do not open the radiator cap when the engine is hot to avoid burns.

Stick to the anti-freeze recommended by BMW for your R1200RT.

If you’ve performed maintenance that involves draining the coolant, make sure to bleed the cooling system properly to remove any air pockets. Air pockets can reduce the cooling efficiency.

Avoid using tap water as it may contain minerals that can harm the cooling system, use distilled water.

BMW R1200RT Coolant Check

Make sure the engine is completely cool before attempting to open the hood of your BMW R1200RT motorcycle.

Locate the coolant tank situated behind the steering stem.

To check the coolant level, turn the handlebars to the left, revealing the min and max lines on the right side of the tank.

To top up the coolant, simply remove the rubber cap located behind the steering stem.

For a clear view of the coolant level, use a flashlight positioned at the front of the bike, near the radiator.

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