Castrol GTX High Mileage 20W-50 Synthetic Blend Motor Oil
5 Quarts
Price as of 2026-06-01. Check Amazon for the current price.
Quick Decision
Is This Right For You?
- •Budget-conscious shoppers — priced below 74% of Motor Oil
- •Those who want a top-rated option — in the top 19% of Motor Oil by rating
- •Castrol loyalists — the brand spans 51 products in our database
- •Liqui Moly 20226 Molygen New Generation 5W-30 Synthetic Motor offers a better rating (4.9/5) at a similar or lower price ($22)
- •STP Premium Small Engine 4 Cycle Oil Formula — 39% 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 It Compares
This Product Castrol GTX High Mileage 20W-50 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 | $22.96 | $19.97 | $22.22 | $13.99 |
| Rating | 4.8/5 | 4.8/5 | 4.9/5 | 4.8/5 |
| Reviews | 2,595 | 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
- 1597C3
- 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 | * Based on API and ACEA volatility specifications | ** In 5W-20, 5W-30 and 10W-30 grades versus industry speci…
Source: product listing on 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
Bottom Line
Castrol GTX High Mileage 20W-50 Synthetic Blend Motor Oil earns Mubboo Score A. Priced at $23 — a budget-friendly option, below the category average of $32. Rated 4.8/5 from 2,595+ reviews. Strong buy if: budget-conscious shoppers, those who want a top-rated option. Skip if: liqui moly 20226 molygen new generation 5w-30 synthetic motor offers a better rating (4.9/5) at — Valvoline MaxLife High Mileage 5W-30 Synthetic Blend Motor (Score A+, $20) may fit better.
Frequently Asked Questions
Is the Castrol GTX High Mileage 20W-50 Synthetic Blend Motor Oil worth buying in 2026?
It earns a Mubboo Score of A, with a 4.8/5 rating from 2,595 reviews — better than 81% of Motor Oil we track.
How much does the Castrol GTX High Mileage 20W-50 Synthetic Blend Motor Oil cost?
It is currently $22.96 — budget-tier pricing for Motor Oil.
How does the GTX High Mileage 20W-50 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 20W-50 Synthetic Blend Motor Oil carries a Mubboo Score of A vs A+.
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 (2026-06-01) and may change.