
Castrol GTX 5W-30 Synthetic Blend Motor Oil, 5 Quarts
- 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
Mubboo Value Score: 6.1/10
How it stacks up
Rated 4.8/5 — better than 81% of 58 Motor Oil we track. Budget-tier pricing at $20.97.
Head-to-Head vs Category Leader
| Castrol | Motul (Leader) | |
|---|---|---|
| Price | $20.97 | $69.96 |
| Rating | 4.8/5 | 4.9/5 |
| Reviews | 2,792 | 7,632 |
| Mubboo Score | 6.1/10 | 4.2/10 |
The Castrol GTX 5W-30 Synthetic Blend Motor Oil, 5 Q offers comparable quality at 70% lower price.
Quick Specs
- Size
- 5 Quarts
- Unit Count
- 160.0 Fluid Ounces
- Flash Point
- 200 Degrees Celsius
- Item Weight
- 8 ounces
- Manufacturer
- Castrol
- Model Number
- 03096
- Liquid Volume
- 5 Quarts
- Container Type
- Bottle
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
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




Frequently Asked Questions
Is the Castrol Castrol GTX 5W-30 Synthetic Blend Motor Oil, 5 Quarts worth buying in 2026?
It earns a Mubboo Score of 6.1/10, with a 4.8/5 rating from 2,792 reviews — better than 81% of Motor Oil we track.
How much does the Castrol Castrol GTX 5W-30 Synthetic Blend Motor cost?
It is currently $20.97 — budget-tier pricing for Motor Oil.
How does it compare to the top-rated Motor Oil?
The Castrol GTX 5W-30 Synthetic Blend Motor Oil, 5 Q offers comparable quality at 70% lower price.
Sources & References
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