Castrol GTX High Mileage 5W-30 Synthetic Blend Motor Oil, 5 Quarts
- Phosphorus Replacement Technology helps extend emission system life
- Superior dispersancy that fights sludge build up
- Exceptional oil burn-off protection exceeding industry standards* | Seal conditioners to help reduce leaks
- Advanced additives that help prevent engine wear | Improved Fuel Economy**
- Meets or exceeds the following specifications: API SP/SN PLUS/SN/SM | ILSAC GF-6 | Meets Ford WSS-M2C946-B1 | Meets Ford WSS-M2C961-A1 | * B…
Price & Buy Timing
Currently $20.97 — $0.10 below the 90-day average of $21.10.
All-time low: $19.90 on Wed Oct 09 (from 182 price checks).
Mubboo Value Score: 6.8/10
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 | 8,413 | 7,632 |
| Mubboo Score | 6.8/10 | 4.2/10 |
The Castrol GTX High Mileage 5W-30 Synthetic Blend M offers comparable quality at 70% lower price.
Quick Specs
- Size
- 5 Quarts
- Unit Count
- 160.0 Fluid Ounces
- Manufacturer
- Castrol
- Model Number
- 03102
- Liquid Volume
- 160 Fluid Ounces
- Container Type
- Bottle
- Item Type Name
- Motor Oil
- Viscosity Level
- Medium to High
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 High Mileage 5W-30 Synthetic Blend Motor Oil, 5 Qu worth buying in 2026?
It earns a Mubboo Score of 6.8/10, with a 4.8/5 rating from 8,413 reviews — better than 81% of Motor Oil we track.
How much does the Castrol Castrol GTX High Mileage 5W-30 Synthetic cost?
It is currently $20.97. The 90-day average is $21.10 and the all-time low we recorded is $19.90.
How does it compare to the top-rated Motor Oil?
The Castrol GTX High Mileage 5W-30 Synthetic Blend M offers comparable quality at 70% lower price.
Sources & References
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