can i fill this oil for unicorn bike disk brakes?

Unicorn doesn't make brakes, they do frames. Look at your brakes. If they are Shimano and say "Shimano Mineral Oil" on the reservoir housing at the lever, then that's what they use.

What is the safest thing to do with old used oil?

Don't pour it down the drain of flush it. It is non-toxic mineral oil so you could treat it like old olive oil I guess. Or bacon grease. If you ever burn leaves or wood scraps you could burn it. Good question.

What is the volume of oil in this product? Yet another Amazon listing without relevant details!

The description says 1000 cc (cubic centimeters), which is approximately one quart.

May i apply it to my bicycle chain?

I would not use this product as a chain lube. I would recommend a product like Rock and Roll Gold Standard Chain Lubricant. Pedros and Finish Line also make chain specific lubricants.

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Shimano Hydraulic Bicycle Disc Brake Mineral Oil - SM-DBOIL - KSMDBOILO

Shimano Hydraulic Bicycle Disc Brake Mineral Oil - SM-DBOIL - KSMDBOILO

Product ID: 178147289

Details

Brand
SHIMANO
Liquid Volume
1000
Material
Mineral Oil
Package Information
Bottle
Recommended Uses For Product
Bicycle disc

🔥80°C flash point for safety

🧴1000ml bottle, long-lasting supply

🛠️Viscosity 10W for smooth braking

579.47 DT

Duties & taxes included

In stock

Sold byAmazon TunisiaDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

🚴‍♂️ Stop on a dime, ride with confidence!

SAFETY FIRST - High 80°C flash point minimizes risk, ensuring reliable performance under intense braking conditions.
CORROSION DEFENSE - Specially formulated mineral oil protects your brake system from wear and corrosion, extending component life.
LONG LASTING SUPPLY - Generous 1000ml bottle keeps your bike ready for countless rides without frequent refills.
PRECISION BRAKING POWER - Optimized 10W viscosity ensures consistent, responsive hydraulic disc brake performance.
TRUSTED SHIMANO QUALITY - Backed by a 4.8-star rating and Shimano’s industry-leading standards for professional-grade cycling.

Shimano Hydraulic Bicycle Disc Brake Mineral Oil (SM-DB-OIL) is a premium 1000ml mineral oil designed specifically for hydraulic disc brake systems. Featuring a 10W viscosity grade and an 80°C flash point, it delivers smooth, reliable braking performance while protecting your bike’s components from corrosion. Trusted by cyclists worldwide and highly rated for quality and durability.

Specifications

ASIN	B001E4MH84
Best Sellers Rank	#310,025 in Car & Motorbike ( See Top 100 in Car & Motorbike ) #118 in Hydraulic Oils
Brand Name	SHIMANO
Container Type	Bottle
Customer Reviews	4.8 4.8 out of 5 stars (2,062)
Flash Point	80 Degrees Celsius
Item Form	Oil
Liquid Volume	1000 Millilitres
Material Type	Mineral Oil
Model Number	SM-DB-OIL
Number of Packs	1
Part Number	SM-DB-OIL
Recommended Uses For Product	Bicycle hydraulic disc brake systems
SAE J300 Viscosity Grade	10W
Specific Uses For Product	Prevent Corrosion
UPC	750022902362 022255354042
Unit Count	1 Count
Viscosity	10w

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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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