Can I use this for my Mountain Bike Disks?

have a look at the link and if it falls in the correct category i do not see why you cannot. Dot 5.1 is a bit overkill. The link is :http://www.epicbleedsolutions.com/blog/5-mistakes-to-avoid-when-bleeding-mountain-bike-brakes/ (disclaimer: always refer to your manufacturer)

what break fluid should i use in my 2014 bmw 320d m sport touring

BMW uses dot 4 brake fluid in BMW 320D's. Any DOT4 brake fluid will be okay, however this particular dot 5.1 fluid is relaively low quality, and many dot 4 fluids outperform it even when old. Contact BMW or use a BMW forum to ensure that you end up with a high quality brake fluid that is applicable to your use case.

Can I use this to replace dot 4 that is currently in my focus mk2?

Yes dot 5.1 can be used with both dot 3 and dot 4 brake fluid so it is fine to mix or use instead.

Comma Dot 5 1 Synthetic Brake And Clutch Fluid 1l

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€ 33.64

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Sold byAmazon SlovakiaDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

🚗 Stop on a dime, drive with confidence!

TRUSTED LEGACY BRAND - From a UK pioneer since 1965, delivering premium brake fluid trusted by professionals worldwide.
SEAMLESS COMPATIBILITY - Easily blends with DOT 3 and DOT 4 fluids, making upgrades and maintenance hassle-free.
COST EFFECTIVE EXCELLENCE - Top-tier performance at a fraction of the price of cycle-branded alternatives—brake smarter, not harder.
UNRIVALED HEAT RESISTANCE - Withstands extreme braking heat up to 180°C wet boiling point for consistent stopping power.
ENGINEERED FOR HIGH PERFORMANCE - Specifically formulated for ABS, clutch, and high-performance braking systems to maximize safety.

Comma BF51L 1L DOT 5.1 Synthetic Brake Fluid is a premium, high-temperature brake fluid designed for high-performance vehicles. It offers a minimum wet boiling point of 180°C, ensuring reliable braking under extreme conditions. Compatible with DOT 3 and DOT 4 fluids, it supports ABS, clutch, and braking systems, delivering enhanced safety and performance. Trusted since 1965, Comma provides a cost-effective solution favored by professionals and enthusiasts alike.

Specifications

ASIN	B003BPUSZS
Best Sellers Rank	3,118 in Automotive ( See Top 100 in Automotive ) 3 in Car Brakes 34 in Greases & Lubricants
Brand	Comma
Customer Reviews	4.7 4.7 out of 5 stars (338)
Date First Available	10 Mar. 2010
Guaranteed software updates until	unknown
Item Weight	998 g
Item model number	BF51L
Manufacturer	Comma Oil & Chemicals Ltd.
Manufacturer part number	BF51L
Model	BF51L
Product Dimensions	8.99 x 7.01 x 26.01 cm; 997.9 g
Viscosity	DOT5.1

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Our prices include the product cost, international shipping, import duties, customs clearance, and local delivery charges. We handle all customs and import procedures, ensuring there are no hidden fees upon delivery. PRO members receive additional benefits including free shipping.

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€ 33.64

Duties & taxes included

In stock

Sold byAmazon SlovakiaDelivered 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 Slovakia.

Secure transaction

Trustpilot

TrustScore 4.5 | 7,300+ reviews

Vikram D.

The MOLLE sheath is of exceptional quality. Very happy with my purchase.

2 weeks ago

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Customer service was outstanding when I had questions about the product.

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Comma DOT 5.1 Synthetic Brake and Clutch Fluid 1L

Description

Specifications

Common Questions