What Coolant Does a 2011 BMW 328i Take?

The 2011 BMW 328i is designed to use BMW-approved phosphate- and nitrite-free HOAT coolant, typically the blue BMW Genuine Antifreeze/Coolant (part number 82-14-2-209-769 or superseding numbers), mixed 50/50 with distilled water. Using universal green coolant or non-approved types is not recommended and can damage the cooling system over time.

Understanding the Correct Coolant for a 2011 BMW 328i

The 2011 BMW 328i (E90/E91/E92/E93 generation) uses an aluminum-intensive engine and a complex cooling system, including an electric water pump and plastic/composite components. Because of this, BMW specifies a particular coolant chemistry designed to protect against corrosion, scale buildup, and electrolysis. Choosing the right coolant is not just about color; it’s about compatibility with BMW’s materials and engineering.

The Official BMW Coolant Specification

BMW publishes internal specifications for coolant rather than simply listing a brand name. For a 2011 328i, BMW’s own branded coolant is the benchmark and the easiest way to ensure compatibility.

The key characteristics of the correct coolant for a 2011 BMW 328i include:

• BMW Genuine Antifreeze/Coolant (commonly blue in color in North America and Europe)
• Hybrid Organic Acid Technology (HOAT) formula
• Free of nitrites, amines, phosphates, and borates (often labeled as “phosphate-free” and “nitrite-free”)
• Optimized for aluminum and magnesium alloys and plastic components used in BMW engines
• Concentrate that must be mixed with distilled or deionized water before use

Together, these characteristics ensure the coolant is chemically matched to BMW’s design requirements, reducing the risk of corrosion, clogging, and premature failure of major cooling components like the radiator and water pump.

Common BMW Part Numbers and Names

While part numbers can change over time as BMW supersedes older items, the blue BMW coolant used in a 2011 328i is typically sold under these identifiers (check your local dealer or BMW’s current catalog for the latest number):

These are some of the relevant part-number details you are likely to see:

• 82-14-2-209-769 – BMW Genuine Antifreeze/Coolant (concentrate), blue
• Superseded numbers may appear as 82-14-1-467-704 or similar, depending on region and manufacturing updates
• Label typically reads “BMW Antifreeze/Coolant” and will state that it is nitrite- and phosphate-free
• Some aftermarket re-bottled coolants explicitly state “Meets BMW N 600 69.0” or “Meets BMW GS 94000” (or similar BMW coolant specs)

Although the exact part number can vary slightly by market and production run, any current, dealer-supplied blue BMW coolant listed for your VIN will be suitable for a 2011 328i.

Mix Ratio and Type of Water

BMW sells coolant as a concentrate, which means it must be diluted before filling or topping up the system. Using the correct mix ratio and water type matters for both freeze protection and long-term reliability.

Key recommendations for mixing coolant for a 2011 BMW 328i include:

• Standard mix: 50% BMW coolant concentrate and 50% distilled or deionized water
• Climate flexibility: In very cold climates, up to about 60% coolant / 40% water may be used, but never exceed about 60% concentration
• Avoid tap water: Tap or well water can contain minerals that promote scale buildup and corrosion
• Use distilled or deionized water only: This keeps mineral content low and protects small coolant passages, the heater core, and water pump

This mixture provides strong freeze and boil-over protection, while ensuring corrosion inhibitors and lubricants in the coolant work as designed throughout the cooling system.

Can You Use Aftermarket or “Universal” Coolant?

Many automotive stores market coolants as “universal” or “for all makes and models,” but that does not necessarily mean they meet BMW’s chemistry requirements. Using the wrong coolant can shorten the life of expensive parts like the electric water pump and thermostat, or cause issues with plastic fittings and radiators.

When considering an aftermarket coolant, the following points are critical:

• Check approvals: Look for explicit mention that it “meets or exceeds BMW requirements” or lists BMW’s coolant specification (for example, BMW N 600 69.0 or GS 94000)
• Avoid generic “green” IAT coolant: Older, silicate-heavy green coolant is not suitable for modern BMW aluminum engines
• Be cautious with “universal” coolants: Many are OAT-based and not optimized for BMW’s specific HOAT requirements and plastic components
• Stick with HOAT types: Use a HOAT coolant explicitly formulated for European vehicles, especially if the manufacturer names BMW on the label

While a quality European-spec HOAT coolant from a reputable brand can work, the safest, least ambiguous choice is BMW Genuine Antifreeze/Coolant, especially if you are unsure about decoding labels and chemical specs.

Color: Why “Blue Coolant” Isn’t the Whole Story

Drivers often identify coolant by color alone, but color is not standardized by chemistry or manufacturer. For BMWs like the 2011 328i, “blue” is usually right, but color should not be your only guide.

In practice, keep these color-related guidelines in mind:

• BMW factory fill: Typically a blue coolant in this generation (E90/E91/E92/E93)
• Do not mix colors: If your car currently has green, orange, or another color, a full flush is safer before switching to the correct blue HOAT coolant
• Read the label: Always confirm chemistry (HOAT, phosphate-free, nitrite-free) and BMW compatibility rather than relying solely on color
• Beware of “looks right”: Some non-BMW coolants are also blue but may not meet BMW specs

Color can be a helpful quick check, but chemical specification and manufacturer approval are what ultimately matter for engine longevity.

Service Intervals and Maintenance Considerations

BMW historically advertised “lifetime” coolant in some marketing for this era, but most independent experts and many BMW technicians recommend periodic coolant replacement to maintain corrosion protection and cooling efficiency.

For a 2011 BMW 328i, common best-practice intervals and checks include:

• Coolant change: Approximately every 3–5 years or 50,000–60,000 miles (80,000–100,000 km), whichever comes first
• Regular level checks: Inspect the coolant reservoir level and color periodically, especially before long trips or in extreme temperatures
• Look for discoloration: Brown, rusty, milky, or oily coolant can indicate contamination, corrosion, or a head gasket issue
• Inspect components: Check hoses, the expansion tank, and the electric water pump area for leaks, residue, or white crusty deposits

Replacing coolant proactively helps prevent internal corrosion and overheating, problems that can become expensive if they damage the head gasket, radiator, or electric water pump.

How to Confirm the Exact Coolant for Your Specific Car

Although the 2011 BMW 328i model range broadly shares the same coolant requirements, production variations, regional packaging, and updated part numbers mean that confirming the exact recommended coolant for your specific car is wise.

To verify the correct coolant for your individual vehicle, you can:

• Check your owner’s manual: Look under the “Engine Coolant” or “Cooling System” sections for BMW-approved coolant information
• Call a BMW dealer or service center: Provide your VIN and ask for the current recommended coolant part number
• Use BMW’s online parts catalog: Many official or dealer-supported sites allow you to enter your VIN and see current coolant listings
• Inspect the existing coolant label: If the car has been serviced with BMW parts, old containers or service invoices may list the exact coolant used

This VIN-based verification removes guesswork and ensures you match what BMW currently specifies for your exact configuration and market.

What to Do If the Wrong Coolant Has Been Used

Many used 2011 BMW 328i cars have had previous owners or shops that may not have followed BMW’s coolant guidelines. If you suspect or know the wrong coolant has been used, it’s usually possible to correct the situation before serious damage occurs.

Recommended steps if incompatible coolant may be in the system include:

• Inspect the coolant: Look at the expansion tank for unusual colors, sludge, or separation
• Perform a complete flush: Drain the system fully and refill with the correct BMW coolant/water mix, sometimes repeating until the fluid runs clear and uniform
• Bleed the system properly: The 2011 328i has an electric water pump and a specific bleed procedure to remove air pockets
• Monitor temperatures: After switching to the correct coolant, monitor engine temperature and check for leaks or low coolant warnings

Timely correction of coolant type and a proper flush can restore the system to spec and minimize long-term risks to the engine and cooling components.

Summary

The 2011 BMW 328i is engineered to run on BMW-approved blue HOAT coolant, such as BMW Genuine Antifreeze/Coolant (commonly sold under part number 82-14-2-209-769 or its latest superseding equivalent), mixed 50/50 with distilled water. This nitrite- and phosphate-free formula is specifically designed for BMW’s aluminum engines and complex cooling systems. While some high-quality European HOAT coolants may be compatible, the safest choice is the official BMW product or an aftermarket coolant that clearly states it meets BMW’s specifications. Regular coolant changes every few years, avoiding tap water, and ensuring no mixing with generic green or universal coolants will help keep the 2011 328i’s cooling system reliable and protect the engine over the long term.

Is BMW coolant green or blue?

BMW uses both green and blue coolants depending on the model year; blue coolant (G48cap G 48𝐺48) was standard on older models, while newer BMWs made from March 2018 onwards use green coolant (HT−12cap H cap T minus 12𝐻𝑇−12). The two coolants are technically backward-compatible, meaning you can use green in older cars, but BMW advises against mixing them due to the risk of a reaction and potential engine damage. The safest practice is to stick with the color that came in your car from the factory.
 
This video explains the differences between BMW blue and green coolants: 1mNoBrainer TalkYouTube · Mar 20, 2022
Coolant color guide

• Blue: The traditional BMW coolant, known as G48, was used in models made before March 2018. 
• Green: The newer coolant, known as HT-12, was introduced for models made after March 2018 and is also backward-compatible with older BMWs. 

Key considerations

• Avoid mixing: Do not mix blue and green coolants. If your car originally came with blue coolant, it’s best to continue using blue. If it came with green, continue using green. 
• Flush the system: If you need to change the type of coolant, you must completely flush the old coolant and air from the system before adding the new one to prevent engine damage, according to the Facebook video. 
• Check with your dealer: If you are unsure which coolant your car uses, contact a BMW dealer and provide your Vehicle Identification Number (VIN) to get the correct specification. 

How much coolant does a 2011 BMW 328i take?

Coolant

Capacity:	With AT8.9 quarts.
Capacity:	With MT8.7 quarts.

What coolant does the BMW 3 series use?

BMW 3 Series engine coolant G12, G11, G13, G12+

Does BMW use a special coolant?

Yes, BMWs require a special coolant formulated to be nitrite and phosphate-free to prevent corrosion in the aluminum engine components. Using the wrong coolant can damage the water pump, seals, and radiator. Genuine BMW coolant should be mixed with distilled water, typically a 50/50 ratio, before being added to the system.
 
This video explains how to add coolant to a BMW E90/E91/E92/E93 325i/328i/330i: 1mAuto Repair GuysYouTube · Jul 9, 2024
Why BMW coolant is special

• Protects aluminum components: BMW engines are built with aluminum parts, and the specific coolant is designed to prevent corrosion and buildup. 
• Nitrite and phosphate-free: Many common coolants contain nitrites and phosphates, which can cause damage to a BMW’s cooling system. 
• Lifetime coolant: BMW’s “lifetime” coolant is formulated for durability and long-term use, although it still needs to be topped off or changed as recommended by the owner’s manual. 

What to use and how to mix it

• Genuine BMW coolant: The first and safest recommendation is to use genuine BMW coolant. 
• Approved aftermarket coolant: If not using the genuine product, choose a compatible coolant like Pentofrost Blue (which meets the G48 standard) or a modern HT12 green coolant for newer models, but always check compatibility with your specific vehicle. 
• Mix with distilled water: Never add straight coolant to your car. You must mix it with distilled water to achieve the correct ratio for optimal performance. 
• 50/50 mixture: A 50/50 mix is recommended for most applications to balance freeze protection and heat dissipation. 

You can watch this video for a simple guide on BMW lifetime coolants: 1mNoBrainer TalkYouTube · Mar 20, 2022