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Castrol

Castrol GTX 5W-30 Synthetic Blend Motor Oil, 5 Quarts

  • Based on 2,633 reviews
Condition: New
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Availability: Only 6 left in stock, order soon!
Fulfilled by Amazon
Arrives Thursday, Jun 26
Order within 21 hours and 56 minutes
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Size: 5 Quart


Features

  • 1.4X superior sludge protection compared to tough industry standards, as measured in the Sequence VH Sludge test vs. API SP test limits
  • Advanced protection against viscosity and thermal breakdown
  • Superior protection against high-temperature deposits
  • Premium-quality base oils and anti-wear additives that help extend the life of your engine

Description

Various environmental factors, such as subpar fuel quality, hot weather, and stop-start driving conditions, can have detrimental effects on your engine. The accumulation of sludge, varnish, and carbon build-up due to these factors can significantly reduce engine life, power output, and fuel economy. Castrol Ultraclean is a synthetic blend engine oil available in 0W-20, 5W-20, and 5W-30 grades. Its unique double-action formula has been scientifically proven to effectively cleanse and remove sludge that can obstruct vital engine oilways. Additionally, its advanced synthetic technology aids in preventing the formation of new sludge. In fact, it offers up to 1.4 times superior sludge protection compared to the latest industry standard. When it comes to maintaining a clean engine, no other oil can rival the performance of Castrol Ultraclean.

Viscosity: 5W-30 sae_grade


Brand: Castrol


Vehicle Service Type: Car


Flash Point: 200 Degrees Celsius


UPC:


Viscosity: ‎5W-30 sae_grade


Brand: ‎Castrol


Vehicle Service Type: ‎Car


Flash Point: ‎200 Degrees Celsius


UPC: ‎079191000960


Automotive Fit Type: ‎Universal Fit


Global Trade Identification Number: ‎60


Manufacturer: ‎Castrol


OEM Part Number: ‎03096


Model: ‎03096


Item Weight: ‎8 ounces


Product Dimensions: ‎8.31 x 4.56 x 12.75 inches


Country of Origin: ‎USA


Item model number: ‎03096


Is Discontinued By Manufacturer: ‎No


Manufacturer Part Number: ‎03096


Date First Available: April 1, 2013


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Thursday, Jun 26

Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

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Top Amazon Reviews

    • Reliable and Cost-Effective Engine Protection
Size: 5 Quart
I've been using Castrol GTX 5W-30 Synthetic Blend for years, and it consistently delivers excellent performance. My engine runs smoothly, stays clean, and shows no signs of sludge buildup. The 5-quart jug is convenient for oil changes, and the price is competitive. Highly recommend for anyone seeking dependable motor oil. ... show more
Reviewed in the United States on June 6, 2025 by lilpuma Studios
    • The ultimate engine protector!
Size: 5 Quart
I've been using Castrol GTX Ultraclean 5W-30 Synthetic Blend Motor Oil for some time now, and I am thoroughly impressed with its performance. This motor oil is designed to keep engines running cleaner and smoother, and it certainly delivers on that promise. One of the standout features of this oil is its advanced formula, which helps to reduce sludge build-up and protect against wear. Since switching to this oil, I've noticed a significant improvement in my engine's overall cleanliness and efficiency. It runs quieter and feels more responsive, which is a testament to the oil's ability to keep everything well-lubricated and free from harmful deposits. The synthetic blend formulation offers excellent protection in both high and low temperatures, making it a versatile choice for various driving conditions. Whether I'm dealing with scorching summer heat or freezing winter cold, I can trust that Castrol GTX Ultraclean will keep my engine protected and performing at its best. Another benefit is the improved fuel economy. I've observed a slight increase in my vehicle's mileage since using this oil, which is always a welcome bonus. The 5-quart size is convenient and provides enough oil for a complete oil change, making it a cost-effective option for maintaining my vehicle. Overall, Castrol GTX Ultraclean 5W-30 Synthetic Blend Motor Oil is a top-notch product that I highly recommend. Its superior engine protection, improved performance, and enhanced fuel efficiency make it a must-have for any car owner who wants to keep their engine running smoothly and efficiently ! ... show more
Reviewed in the United States on February 14, 2025 by Kimberly Landgraf
    • Top notch
Size: 5 Quart
Good quality oil .One of the best on the market
Reviewed in the United States on May 12, 2025 by JAMES FISHER
    • 185K miles, doesn't burn a drop! 2008 Corolla
Size: 5 Quart
I have a 2008 Corolla, 185K miles, and it has only had GTX 5W30 for oil. Engine does not burn a drop, oil change internal 3500-4000, and various filters. I also have a 2014 Explorer, 180K miles, only saw GTX 5W20, also does not burn a drop, 4000K mile oil change interval. Coincidence? No - I have used GTX for over 40 years, and have never fried an engine - small block Chevys, Fords, Toyotas, Hondas, Jeeps.. The body and frame rot out long before the engine has any internal mechanical issues. I will continue to use GTX as long as possible. GDI engines might move me over to one of the Castrol Synthetics ... show more
Reviewed in the United States on February 23, 2025 by fmwardalot
    • Just what I needed
Size: 5 Quart
Good price. Delivered intact and on time.
Reviewed in the United States on April 7, 2025 by William Matthews
    • Item was just like add say.
Size: 5 Quart
Works great!!!
Reviewed in the United States on June 14, 2025 by jtwebb
    • Get the right weight of oil for your car
Size: 5 Quart
It’s a good oil
Reviewed in the United States on April 4, 2025 by randall
    • Great Price for a Great Oil - Recommended!
Size: 5 Quart
Received a great price for a great oil. But sadly since that great price I have only seen that price available to Prime Members. I have been using Castrol GTX since the 1980's and have always sworn by it being it has never let me down. I have never had an blow a seal, gasket, leak or burn oil while using Castrol GTX. And that is saying a lot as I use to be very hard on my vehicles, and can still be from time to time. One time I busted a hole in my radiator by accident in a parking lot over 15 miles from home. Having no tools or anything with me to fix the problem and being it was late night on a friday I had no choice. But to drive the car home as fast as I could before I lost all the radiator fluid and in turn over heating the car. Well long story short, the car made it home but was long out of antifreeze and the temperature gauge was buried in the red. Fearful for the engine I allowed the vehicle to sit over night to cool off. And the next day she started right up and was as good as always. I have always credited that moment to the fact I had Castrol GTX in the car and in turn is what saved the engine from the excessive heat. As I have not had the same luck other brand names of oil, as I have replaced two engines while using the brand name M. one. Due to my history with and without Castrol GTX motor oil, when I made my recent purchase of a high mileage Chevrolet Blazer 4x4 as a fun, toy around vehicle to haul things with and to play in the snow. Of course I drained the old motor oil out and gave her a fresh batch of Castrol GTX. I did the same for our other car as well. I would easily recommend this product to my friends and family. The oil arrived safely and in a timely manner. I was actually surprised they could ship motor oil as I figured that would be a hazard, but I guess the post office knows better. If you have a Prime Membership, you can almost always find Castrol GTX cheaper on Amazon than at any retail location even with a coupon or on sale. We were not paid nor discounted in any way, shape or form for giving our honest opinion here of this product as a review to assist others. We believe, as a family, it is important to give an honest and accurate review to assist others so they can make good purchasing decisions that can benefit them and their family. And not be lead to cheap, unwanted purchases that are scripted by advertisers to buy their products. We are a family that believes in a minimalist lifestyle while trying to be green as much as possible in all departments of our life. As we care to leave something, anything, of this planet to our grandchildren so they may enjoy it as we have. ... show more
Reviewed in the United States on October 26, 2015 by Roe

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