Castrol GTX High Mileage 5W-30 Synthetic Blend Motor Oil
5 Quarts
Price as of 2026-06-05. Check Amazon for the current price.
Quick Decision
Price Intelligence
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).
- Budget:$6–$23← You are here
- Mid-range:$23–$39
- Premium:$39+
Is This Right For You?
- •Budget-conscious shoppers — priced below 78% of Motor Oil
- •Those who want a top-rated option — in the top 19% of Motor Oil by rating
- •Risk-averse buyers — 8,413+ reviews give a highly reliable picture
- •Castrol loyalists — the brand spans 62 products in our database
- •STP Premium Small Engine 4 Cycle Oil Formula — 33% cheaper at $14 (Score A)
- •Liqui Moly 20226 Molygen New Generation 5W-30 Synthetic Motor — higher rated at 4.9/5 ($22)
📊 Based on data analysis of 58 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 58 Motor Oil available to US consumers · last refreshed 2026-06-05.
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 | Best Rated Liqui Moly 20226 Molygen New Generation 5W-30 Synthetic Motor | Best Value STP Premium Small Engine 4 Cycle Oil Formula | |
|---|---|---|---|---|
| Price | $20.97 | $19.97 | $22.22 | $13.99 |
| Rating | 4.8/5 | 4.8/5 | 4.9/5 | 4.8/5 |
| Reviews | 8,413 | 27,740 | 5,097 | 3,256 |
| 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 People 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.
- Improved engine smoothness and quietness
- Good value and competitive price
- Dependable and reliable performance
- High mileage engine benefits
- Inconvenient eco-pack packaging
- No rebate eligibility on 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
- 62 products in our database
- Average rating: 4.8/5 across all products
- Price range: $12.99 – $187.25
- Categories: brake-fluids, Fuel Additives, Motor Oil, transmission-fluids
If not the GTX High Mileage 5W-30 Synthetic Blend Motor Oil, consider these
Featured in Our Reviews
Bottom Line
Castrol GTX High Mileage 5W-30 Synthetic Blend Motor Oil earns Mubboo Score A+. Priced at $21, around its typical level. Rated 4.8/5 from 8,413+ reviews. Strong buy if: budget-conscious shoppers, those who want a top-rated option.
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 81% of Motor Oil we track.
How much does the Castrol GTX High Mileage 5W-30 Synthetic Blend Motor Oil 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 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 (4.8/5, 27,740 reviews, $19.97). 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 (2026-06-05) and may change.