Is this good for my BMW 2019 540i?

Thank you for your interest in PEAK OET Extended Life Blue. Yes, this is the correct product for you 2019 BWM 540i.

Can you mix this with the bmw brand coolant? thats what is in my coolant system currently. this product seems to be basically the same thing as that.

Yes, you can use PEAK OET Extended Life Blue for European Vehicles but I would recommend performing a complete flush and fill first.

i bought this for my 2009 ml350 4matic thinking it was correct color. mine currently is yellow and the bottle is blue coolant, can i mix these?

Do not mix coolants of different color. This can cause corrosion and damage the engine. It sounds as if your coolant was incorrectly filled somewhere with orange which is used in GM vehicles. The German cars all call for the blue coolant. This would include your Mercedes. You will need to drain your coolant or have it flushed in order to add the proper blue coolant.

Can you add this in with other coolant or do you need to flush the system first? I've been using the bmw branded coolant.

If you want you can no need to flush it. since you’ve been using BMW coolant, it should be the same blue color as well.

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OET Extended Life Blue Concentrate Antifreeze/Coolant for European Vehicles, 1 Gal.

Product ID: 280029034

🔵Si-HOAT blue formula for European cars

⚗️Concentrated 1-gallon formula

🛡️150,000 miles corrosion protection

$148.98

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Description

🔵 Stay Cool, Drive Confident: The European Engine’s Best Kept Secret

SEAMLESS COMPATIBILITY - Mixes flawlessly with other extended life coolants, ensuring hassle-free maintenance.
TAILORED FOR EUROPEAN PRECISION - Specifically engineered for BMW, Jaguar, Volvo, and other European vehicles requiring blue Si-HOAT antifreeze.
ULTIMATE COOLING SYSTEM DEFENSE - Advanced rust & corrosion inhibitors shield your engine for up to 5 years or 150,000 miles.
SAFETY FIRST WITH BITTERING AGENT - Includes Denatonium Benzoate to prevent accidental ingestion, protecting your family and pets.
CONCENTRATED POWER IN EVERY GALLON - Economical 1-gallon concentrate lets you flush, fill, or top off with ease and precision.

PEAK OET Extended Life Blue Concentrate Antifreeze/Coolant is a premium, silicate-enhanced hybrid organic acid technology (Si-HOAT) formula designed specifically for European vehicles. Offering up to 5 years or 150,000 miles of protection against rust and corrosion, this 1-gallon concentrate is fully compatible with other extended life coolants and includes a safety bittering agent. Trusted by thousands, it ensures optimal engine cooling performance and longevity for brands like BMW, Jaguar, and Volvo.

Specifications

ASIN	B08PMZH5ZC
Best Sellers Rank	#2,976 in Automotive ( See Top 100 in Automotive ) #21 in Antifreezes & Coolants
Brand	PEAK
Customer Reviews	4.7 4.7 out of 5 stars (2,349)
Date First Available	December 3, 2020
Item Weight	9.77 pounds
Manufacturer	PEAK
Manufacturer Part Number	PEB0B3-01
Package Dimensions	11.77 x 7.52 x 3.94 inches

Reviews

G**K

Yes

Good quality coolant

17.05.2026

A**A

cooling system hasn't exploded!

price is better than bmw oem. other than that, not sure how to rate such things, how will i know how well it works unless my cooling system explodes?

3.06.2026

A**S

Works great on my BenzO!!

Blue color as pictured! My suv loves it!!

19.06.2026

D**M

Appropriate for BMW

Used in my BMW with confidence. Price is right.

31.05.2026

A**R

Save a trip to the dealership.

It does what it’s supposed to do. Not much more to say.

9.06.2026

R**.

works great

Works well on BMWs

20.02.2026

A**P

GOOD

21.05.2026

H**O

Excellent coolant!!

I bought the concentrate to top off my reservoir in my 2007 Mercedes. I have used this product in my GM vehicles and has outstanding results. The brand doesn’t disappoint in the Mercedes either. This coolant actually keeps engine temperatures low….cooler running engine is a great thing IMO. Fast shipping and very fair pricing despite tariff environment.

9.10.2025

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$148.98

Duties & taxes included

In stock

Sold byAmazon USADelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to USA.

Secure transaction

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TrustScore 4.5 | 7,300+ reviews

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2 weeks ago

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The product exactly matches the description. Very satisfied with my purchase.

5 days ago

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