Why does buying a 6 pack cost $55 but buying 1 for $7.50 six times cost $45?

Because the single one is high mileage, not advanced synthetic.

is this oil suitable for gasoline engines with 200.000 km milage?

I'm sure it is. I have a 2004 Toyota Corolla with 100,000 miles on it. I have used various brands of fully synthetic oil in it from day 1. The car doesn't look as good as new, but the engine seems to still be performing like new.

I am seeing castrol edge 10w30 black quart and 10w30 gold quart with titanium. The gold quart is cheaper than the black. Which is better?

The 10w30 gold quart is extended performance. It should last longer in your engine before you need to change it.

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Castrol EDGE High Mileage 10W-40 Advanced Full Syn Motor Oil, 1 Qt, 6 Pack

Product ID: 31550411

Details

Brand
Castrol
Liquid Volume
192 fluid
Package Information
Bottle
SAE J300 Viscosity Grade
10W-40
Vehicle Service Type
For vehicles

⛽15,000 miles per oil change

🔥Reduces leaks & oil burnoff

🛡️Phosphorus Replacement Tech for emission system

799.53 DT

Duties & taxes included

In stock

Sold byAmazon TunisiaDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

🛢️ Keep your high-mileage engine running like new — because every mile counts!

LEAK BURNOFF DEFENSE - Minimizes oil leaks and burnoff to maintain peak engine power and efficiency.
PROVEN QUALITY TRUST - Backed by Castrol’s advanced synthetic formula and a 12-month warranty for peace of mind.
EMISSION SYSTEM GUARDIAN - Phosphorus Replacement Technology protects your catalytic converter for cleaner, greener rides.
LONG LASTING PERFORMANCE - Drive worry-free up to 15,000 miles between oil changes, saving time and money.
TAILORED FOR HIGH MILEAGE - Specifically engineered for vehicles with over 75,000 miles to extend engine life and performance.

Castrol EDGE High Mileage 10W-40 is a premium full synthetic motor oil designed for vehicles with over 75,000 miles. Featuring Phosphorus Replacement Technology, it protects emission systems while reducing leaks, oil burnoff, and deposits. It supports extended oil change intervals up to 15,000 miles and meets or exceeds API SP/SN PLUS/SN/SM standards, ensuring superior engine protection and performance.

Specifications

ASIN	B01CRYHQEY
Automotive Fit Type	Universal Fit
Best Sellers Rank	#21,146 in Automotive ( See Top 100 in Automotive ) #227 in Motor Oils
Brand Name	Castrol
Compatible with Vehicle Type	For vehicles with over 75,000 miles
Container Type	Bottle
Customer Reviews	4.5 4.5 out of 5 stars (132)
Global Trade Identification Number	00079191061718, 00079191217108
Included Components	Motor Oil
Item Type Name	Motor Oil
Liquid Volume	192 fluid ounces
Manufacturer	Castrol
Manufacturer Part Number	15D53C-6pk
Manufacturer Warranty Description	12 months
Model Number	15989F-6PK
Number of Packs	6
SAE J300 Viscosity Grade	10W-40
Size	1 Quart, Pack of 6
UPC	079191061718 079191217108
Unit Count	192 Fluid Ounces
Viscosity Level	Medium

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TrustScore 4.5 | 7,300+ reviews

Khalid Z.

Great experience from order to delivery. Highly recommended!

1 week ago

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Excellent communication throughout the order process. Product is perfect.

2 weeks ago

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799.53 DT

Duties & taxes included

In stock

Sold byAmazon TunisiaDelivered 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 Tunisia.

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

Neha S.

Excellent communication throughout the order process. Product is perfect.

2 weeks ago

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