What is the rated mileage for this?

I don't think oil is rated, the engine it goes in is but synthetic oil will last longer than regular oil.

Is it ok to top off regular oil with some of this oil as needed for a slow oil leak?

I have a beater that i use for grocery shopping and Dr appts. It burns oil possibly worn valve guide seals. A friend told me to use synthetic or high mileage and it should help a little. Since i burn about a quart a month ive used everything from this to little known brands. My car still runs fine, passes inspection, no check engine. Oh by the way using a synthetic or a high mileage did cut down on oil consumption.

Fully operational. Shipping worldwide, on schedule.Duty & taxes paid at delivery

Help Track order

Account Cart

Fully operational. Shipping worldwide, on schedule.Duty & taxes paid at delivery

Help Track order

Account Cart

GTX High Mileage 5W-30 Synthetic Blend Motor Oil, 1 Qt, Pack of 6

Product ID: 2526360

Details

Brand
Castrol
Liquid Volume
6 quarts
Package Information
Bottle
SAE J300 Viscosity Grade
5W-30
Vehicle Service Type
For use in 75

⛽Improves fuel economy

♻️Phosphorus Replacement Tech for emission system longevity

🛡️Superior engine wear protection

198143CFA

Duties & taxes included

In stock

Sold byAmazon SenegalDelivered 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 Senegal.

Secure transaction

Description

🛠️ Keep your high-mileage ride running like new — because your engine deserves the best!

LEAK REDUCER - Advanced seal conditioners help minimize leaks, keeping your engine tight and efficient.
SLUDGE FIGHTER - Superior dispersancy formula aggressively combats sludge buildup for a cleaner engine.
ENGINE LONGEVITY BOOSTER - Phosphorus Replacement Technology protects your catalytic converter and extends emission system life.
FUEL EFFICIENCY ENHANCER - Formulated to improve fuel economy, saving you money mile after mile.
INDUSTRY LEADING PROTECTION - Exceeds API SP/SN PLUS and ILSAC GF-6 standards for high mileage vehicles over 75,000 miles.

Castrol GTX High Mileage 5W-30 Synthetic Blend Motor Oil is engineered for vehicles with over 75,000 miles, delivering superior protection against sludge, wear, and leaks. Featuring Phosphorus Replacement Technology, it safeguards emission systems while enhancing fuel economy and meeting top industry standards like API SP and ILSAC GF-6. Packaged in a convenient 6-quart set, it’s the smart choice for professionals who demand longevity and performance from their engines.

Specifications

ASIN	B008BOG0PG
Automotive Fit Type	Universal Fit
Best Sellers Rank	#247 in Automotive ( See Top 100 in Automotive ) #6 in Motor Oils
Brand Name	Castrol
Compatible with Vehicle Type	For use in vehicles with over 75,000 miles, Passenger cars, trucks, and SUVs
Container Type	Bottle
Customer Reviews	4.8 4.8 out of 5 stars (8,569)
Global Trade Identification Number	00079191064405
Included Components	Motor Oil
Item Type Name	Motor Oil
Liquid Volume	6 quarts
Manufacturer	Castrol
Manufacturer Part Number	06440
Manufacturer Warranty Description	12 Months
Model Number	06440
Number of Packs	6
SAE J300 Viscosity Grade	5W-30
Size	1 Quart, Pack of 6
UPC	079191064405
Unit Count	192 Fluid Ounces
Viscosity Level	Low to Medium

Common Questions

Are the products genuine and authentic?+

Yes, all products are sourced directly from authorized retailers in the US, UK, UAE and India. We maintain strict quality control processes and verify each product before shipping. All items come with applicable manufacturer warranties and are covered by our standard return policy.

How long does delivery take and is it reliable?+

Delivery times vary by destination country, typically ranging from 3-9 business days. Each order is fully trackable through our system. We handle all customs clearance and use reliable courier partners for last-mile delivery. You'll receive regular updates about your order status via email and our app.

What is Desertcart? Is it safe to order from?+

Desertcart is an international e-commerce platform operating since 2014. We securely process thousands of orders globally each day. Every product goes through our quality verification process before delivery, and we provide end-to-end order tracking, 24/7 customer support, and a comprehensive returns policy to ensure a safe shopping experience.

How is product pricing calculated?+

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.

Trustpilot

TrustScore 4.5 | 7,300+ reviews

Suresh K.

Very impressed with the quality and fast delivery. Will shop here again.

4 days ago

Neha S.

Excellent communication throughout the order process. Product is perfect.

2 weeks ago

View all Trustpilot reviews

Shop Global, Save with Desertcart

Value for Money

Competitive prices on a vast range of products

Shop Globally

Serving millions of shoppers across more than 100 countries

Enhanced Protection

Trusted payment options loved by worldwide shoppers

Customer Assurance

Trusted payment options loved by worldwide shoppers.

Desertcart App

Shop on the go, anytime, anywhere.