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

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

$29.28★ 4.8(3,765 reviews)
Mubboo Score 5.1/10
  • 6X better wear protection on critical engine parts than industry standards**
  • 1.3X better sludge protection than industry standards*
  • 3X Stronger against viscosity breakdown than leading full synthetic^
  • Protection for 10,000 miles between oil changes
  • *As measured in Sequence VH sludge test vs. API SP limits
View on Amazon

Mubboo Value Score: 5.1/10

Quality9.6/10
based on 4.8/5 customer rating
Popularity1.4/10
3,765 reviews, top 45% in Motor Oil
Value4.3/10
priced below 43% of Motor Oil

How it stacks up

Rated 4.8/5 — better than 81% of 58 Motor Oil we track. Mid-tier pricing at $29.28.

Head-to-Head vs Category Leader

CastrolMotul (Leader)
Price$29.28$69.96
Rating4.8/54.9/5
Reviews3,7657,632
Mubboo Score5.1/104.2/10

The Castrol GTX Full Synthetic 5W-30 Motor Oil, 5 Qu offers comparable quality at 58% lower price.

Quick Specs

Size
5 Quarts
Manufacturer
Castrol
Model Number
15E6DE
Liquid Volume
5 Quarts
Container Type
Bottle
Item Type Name
Full Synthetic Motor Oil
Customer Reviews
4.8 out of 5 stars
Best Sellers Rank
#159 in Automotive (See Top 100 in Automotive)#8 in Motor Oils

What reviewers say

Synthesized from 40 reviews · 100% verified purchases.

For older engines, high-mileage oils like Valvoline MaxLife can help reduce leaks and noise. Compare final cost as Amazon purchases may not qualify for manufacturer rebates, and note Castrol EDGE’s eco-pack can be harder to pour than jugs.

Rating reliability

Well reviewed — reliable rating
🟢 Sold & shipped by Amazon

About Castrol

  • 51 products in our database
  • Average rating: 4.8/5 across all products
  • Price range: $12.99 – $91.74
  • Categories: Fuel Additives, Motor Oil

Other Motor Oil

Liqui Moly 20226 Molygen New Generation 5W-30 Synthetic Motor Oil - 1 Liter
Liqui Moly 20226 Molygen New Generation 5W-30 Synthetic Motor Oil - 1 Liter
$22.22 ★4.9
Mobil 1 High Mileage Full Synthetic Motor Oil 0W-20, 5 Quart
Mobil 1 High Mileage Full Synthetic Motor Oil 0W-20, 5 Quart
$24.97 ★4.9
Motul 8100 X-clean EFE 5W-30 Full Synthetic Motor Oil | Fuel Economy Formula, Helps Protect Emissions Systems, Clean Engine Performance | Long Drain Capable, Improved Engine Responsiveness | 5L
Motul 8100 X-clean EFE 5W-30 Full Synthetic Motor Oil | Fuel Economy Formula, Helps Protect Emissions Systems, Clean Engine Performance | Long Drain Capable, Improved Engine Responsiveness | 5L
$60.86 ★4.9
Royal Purple ROY51020 API-Licensed SAE 0W-20 High Performance Synthetic Motor Oil - 5 qt.
Royal Purple ROY51020 API-Licensed SAE 0W-20 High Performance Synthetic Motor Oil - 5 qt.
$37.56 ★4.9

Frequently Asked Questions

Is the Castrol Castrol GTX Full Synthetic 5W-30 Motor Oil, 5 Quarts worth buying in 2026?

It earns a Mubboo Score of 5.1/10, with a 4.8/5 rating from 3,765 reviews — better than 81% of Motor Oil we track.

How much does the Castrol Castrol GTX Full Synthetic 5W-30 Motor O cost?

It is currently $29.28 — mid-tier pricing for Motor Oil.

How does it compare to the top-rated Motor Oil?

The Castrol GTX Full Synthetic 5W-30 Motor Oil, 5 Qu offers comparable quality at 58% lower price.

Sources & References

Mubboo may earn a commission from purchases made through links on this page. Prices and availability are accurate as of the last sync and may change.