I can change the convencional motor oil for sinteric motor oil in many next service

Sure, should pose Zero problems, just use the manufacturer recommended grade of oil.

whats the percentage of synthetic oil in this oil?

We never divulge amounts of components in our products but we would not call a product a synthetic blend without it having a performance benefit as compared to our conventional product.

Generally i use highmileage 5w-30 for my nissan sentra 2007 which has 200k miles, shall i use highmileage 10w-40 now?

Look what Nissan says on weight to use and stick with it. It is designed to use the weight as for the clearances on you motor. Once you used the high mileage continue to use it. The high mileage has stuff in the oil to expand some of the seal and gaskets in your motor. Now if you go back the seals may shrink back and start to leak. Go to youtube and look for the video on different filters and oils. ie fram. I had a someone tell me to get the fram off my 92 ford 5.0 mustang and watching the video on filter I could see why. Oil is important but especially the filter.

Can you use it in a 212 predator

Contact Predator to see if that oil is compatible with your boat.

03111 Gtx High Mileage 10w 40 Synthetic Blend Motor Oil

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

€ 303.18

Duties & taxes included

In stock

Sold byAmazon CroatiaDelivered 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 Croatia.

Secure transaction

Description

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

ADVANCED SYNTHETIC BLEND - Combines synthetic and conventional oils for superior protection without the premium price tag.
EMISSION SYSTEM FRIENDLY - Phosphorus Replacement Technology safeguards your catalytic converter, reducing harmful emissions.
ENGINE LONGEVITY BOOSTER - Specifically engineered for vehicles with over 75,000 miles to extend engine life and performance.
7 POINT PROTECTION SYSTEM - Defends against corrosion, sludge, timing wear, friction, and more to keep your engine running smoothly.
TRUSTED BRAND RELIABILITY - Backed by Castrol’s 4.8-star rating and thousands of satisfied users, ensuring quality and peace of mind.

Castrol GTX High Mileage 10W-40 Synthetic Blend Motor Oil is expertly formulated for vehicles with over 75,000 miles, delivering superior engine protection across 7 critical areas. Featuring proprietary additives and Phosphorus Replacement Technology, it extends engine life while protecting emission systems. Trusted by thousands with a 4.8-star rating, this 5-quart bottle offers a perfect balance of performance and value for high-mileage cars.

Specifications

ASIN	B00IPS3H1I
Automotive Fit Type	Vehicle Specific Fit
Best Sellers Rank	#134,853 in Automotive ( See Top 100 in Automotive ) #1,079 in Automotive Oils
Brand	Castrol
Brand Name	Castrol
Compatible with Vehicle Type	Car
Container Type	Bottle
Customer Reviews	4.8 out of 5 stars 3,546 Reviews
Global Trade Identification Number	00079191231111
Item Weight	0.01 Ounces
Liquid Volume	160 Fluid Ounces
Liquid volume	160 Fluid Ounces
Manufacturer Part Number	03111C
Model Number	1597C2
Package information	Bottle
SAE J300 Viscosity Grade	10W
UPC	079191231111
Unit Count	160 Milliliters
Vehicle service type	Car
Viscosity Level	Medium to High

Reviews

R**N

Great stuff

I always trust Castrol for everything I run. Great oil and brand. Great value.

25.05.2026

J**M

Buen producto

17.03.2025

J**Y

best oil

best oil for gy6 engines

24.05.2026

R**R

Excellent Option

My Pontiac Grand Prix has 220,000 miles and I’ve been using this oil for years. She continues to run great! If I could only make all the rust dissapear… haha!

3.12.2025

D**N

Great for older engines.

Full synthetic oil tends to run low after a few months on older engines. Also, as an engine ages, the 5w20 also becomes a little too thin, causing it to also run low. So.... I've found that running 10w30 synthetic blend lubricates my 300,000 mile engine just fine without having to add the extra quart between changes. I prefer motorcraft, but it no longer comes in 5 qt bottles, so here we are. It works great for older engines that use a little oil (with 5w20 synthetic).

6.02.2025

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

Farhan Q.

The delivery time was excellent, and the packaging was secure.

2 months ago

Anjali K.

The product quality is outstanding. Exactly what I needed for my work.

1 month ago

View all Trustpilot reviews

€ 303.18

Duties & taxes included

In stock

Sold byAmazon CroatiaDelivered 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 Croatia.

Secure transaction

Trustpilot

TrustScore 4.5 | 7,300+ reviews

Neha S.

Excellent communication throughout the order process. Product is perfect.

2 weeks ago

Reema J.

Perfect platform for hard-to-find items. Delivery was prompt.