Castrol GTX High Mileage 5W-30 Synthetic Blend Motor Oil
Price as of 2026-08-11. Check Amazon for the current price.
Quick Decision
Price Intelligence
- Budget:$6–$21
- Mid-range:$21–$32← You are here
- Premium:$32+
Is This Right For You?
- •Those who want a top-rated option — in the top 1% of Motor Oil by rating
- •Risk-averse buyers — 8,413+ reviews give a highly reliable picture
- •John Deere Original Equipment Hy-Gard 32 oz. Oil — 33% cheaper at $16 (Score A-)
📊 Based on data analysis of 12 products in this category.
Mubboo Score: A
How we calculate the Mubboo Score
Quality (45%): customer rating, normalized to a 10-point scale
Popularity (35%): review volume vs the category leader, log-scaled
Value (20%): price position vs other Motor Oil
Computed from live Amazon rating, review count, and price across 12 Motor Oil available to US consumers · last refreshed 2026-08-11.
How It Compares
This Product Castrol GTX High Mileage 5W-30 Synthetic Blend Motor Oil | Most Popular Valvoline MaxLife High Mileage 5W-30 Synthetic Blend Motor Oil | Best Rated Castrol EDGE 5W-30 Advanced Full Synthetic Motor Oil | Best Value John Deere Original Equipment Hy-Gard 32 oz. Oil | |
|---|---|---|---|---|
| Price | $24.58 | $22.97 | $31.97 | $16.48 |
| Rating | 4.8/5 | 4.8/5 | 4.8/5 | 4.8/5 |
| Reviews | 8,413 | 27,740 | 12,884 | 1,063 |
| Mubboo Score | A | A+ | A- | A- |
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 buyers say about Motor Oil
Themes from buyer reviews across this category — not review data for this specific model.
For high-mileage engines, look for oils with seal conditioners; be aware that some products may ship in pouches instead of jugs, and Amazon purchases might not qualify for manufacturer rebates.
- Engine runs smoother and quieter
- Great value for money
- Excellent engine protection and cleanliness
- Ideal for high-mileage/older vehicles
- Packaging in a bag is difficult to pour
- No mail-in rebates when purchased through Amazon
Related Video Reviews
Key Features
- ✦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 | * Based on API and ACEA volatility specific…
Source: product listing on Amazon.
About Castrol
- 5 products in our database
- Average rating: 4.8/5 across all products
- Price range: $24.58 – $31.97
- Categories: Motor Oil
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Bottom Line
Castrol GTX High Mileage 5W-30 Synthetic Blend Motor Oil earns Mubboo Score A. Priced at $25 — a mid-range option, below the category average of $25. Rated 4.8/5 from 8,413+ reviews. Strong buy if: those who want a top-rated option, risk-averse buyers.
Frequently Asked Questions
Is the Castrol GTX High Mileage 5W-30 Synthetic Blend Motor Oil worth buying in 2026?
It earns a Mubboo Score of A, with a 4.8/5 rating from 8,413 reviews — better than 100% of Motor Oil we track.
How much does the Castrol GTX High Mileage 5W-30 Synthetic Blend Motor Oil cost?
It is currently $24.58 — mid-tier pricing for Motor Oil.
How does the GTX High Mileage 5W-30 Synthetic Blend Motor Oil compare to other Motor Oil?
The category's most-reviewed alternative is the Valvoline MaxLife High Mileage 5W-30 Synthetic Blend Motor Oil (4.8/5, 27,740 reviews, $22.97). The GTX High Mileage 5W-30 Synthetic Blend Motor Oil carries a Mubboo Score of A vs A+.
Sources & References
Products available through US retailers. Prices in USD. Sales tax varies by state and is not included.
Mubboo may earn a commission on purchases made through affiliate links. This does not affect our Mubboo Score, product rankings, or editorial judgments. Prices are accurate as of the last sync (2026-08-11) and may change.