---
product_id: 139941913
title: "Royal Purple HMX w/Synerlec | High Mileage SAE 5W-20 Premium Synthetic Motor Oil |5 Quart | SKU: 17518"
brand: "royal purple"
price: "¥32381"
currency: JPY
in_stock: true
reviews_count: 8
url: https://www.desertcart.jp/products/139941913-royal-purple-hmx-w-synerlec-high-mileage-sae-5w-20
store_origin: JP
region: Japan
---

# Extended oil drain intervals Zinc/Phosphorus anti-wear additive Synerlec film strength technology Royal Purple HMX w/Synerlec | High Mileage SAE 5W-20 Premium Synthetic Motor Oil |5 Quart | SKU: 17518

**Brand:** royal purple
**Price:** ¥32381
**Availability:** ✅ In Stock

## Summary

> 🛢️ Drive Longer, Stronger, Smarter with Royal Purple HMX!

## Quick Answers

- **What is this?** Royal Purple HMX w/Synerlec | High Mileage SAE 5W-20 Premium Synthetic Motor Oil |5 Quart | SKU: 17518 by royal purple
- **How much does it cost?** ¥32381 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.jp](https://www.desertcart.jp/products/139941913-royal-purple-hmx-w-synerlec-high-mileage-sae-5w-20)

## Best For

- royal purple enthusiasts

## Why This Product

- Trusted royal purple brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Seal Revitalizer:** Chemically softens hardened seals to reduce oil consumption and leaks.
- • **Deposit Destroyer:** Advanced detergents keep your engine spotless, promoting longevity and peak performance.
- • **Synerlec Power Boost:** Proprietary additive technology strengthens oil film, reducing friction and extending oil life.
- • **Engine Armor in a Bottle:** Minimizes wear and restores lost engine performance for high-mileage vehicles.
- • **Oxidation Resistance Mastery:** Exceptional stability prevents oil breakdown, letting you push oil change intervals safely.

## Overview

Royal Purple HMX SAE 5W-20 is a premium synthetic motor oil engineered for high-mileage engines. Fortified with zinc/phosphorus anti-wear additives and proprietary Synerlec technology, it minimizes engine wear, revitalizes seals, and extends oil life through superior oxidation resistance. This 5-quart bottle delivers advanced engine protection and cleanliness, ensuring peak performance and longer intervals between oil changes.

## Description

Royal Purple® HMX® is specifically formulated with robust zinc / phosphorus anti-wear additives and Royal Purple’s proprietary additive technology Synerlec® to minimize wear and restore lost engine performance. HMX is chemically enhanced to revitalize hardened seals reducing oil consumption common in higher mileage engines. Stout detergents remove engine deposits and maintain cleanliness promoting engine longevity. Royal Purple’s advanced Synerlec technology provides an exceptional film strength by reducing friction for peak engine performance. Synerlec also provides outstanding oxidation resistance to safely extend oil drains, and an ionic attraction to metal components maintaining a film of oil on parts minimizing start-up wear.

Review: Great product - I live royal purple. I have just under 300000 miles on my Ford focus and still going strong. I change the oil every 10000 miles. I use royal purple from my farm tractor down to my pressure washer it's worth the extra money
Review: That OIL! - Best oil around

## Features

- Minimizes wear and restores lost engine performance
- Increased protection against LSPI
- Fortified with Zinc/Phosphorus anti-wear additive
- Proprietary Synerlec additive technology increase oil film strength allowing for longer oil life
- Exceptional oxidation stability

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B07NYTBP38 |
| Automotive Fit Type | Vehicle Specific Fit |
| Best Sellers Rank | #102,019 in Automotive ( See Top 100 in Automotive ) #610 in Motor Oils |
| Brand | Royal Purple |
| Brand Name | Royal Purple |
| Compatible with Vehicle Type | Car |
| Container Type | Bottle |
| Customer Reviews | 4.9 out of 5 stars 466 Reviews |
| Included Components | 1x 5 Quart Bottle |
| Item Type Name | motor oil |
| Item Weight | 2 pounds |
| Liquid Volume | 5 quarts |
| Manufacturer | Royal Purple |
| Manufacturer Part Number | ROYA17518 |
| Model Number | 17518 |
| Number of Packs | 1 |
| Package Information | Bottle |
| SAE J300 Viscosity Grade | 5W-20 |
| Size | 5 Quart |
| UPC | 641330175183 |
| Unit Count | 160 Fluid Ounces |
| Vehicle Service Type | Car |
| Viscosity Level | Low to Medium |

## Product Details

- **Brand:** Royal Purple
- **Liquid Volume:** 5 Quarts
- **Package Information:** Bottle
- **SAE J300 Viscosity Grade:** 5W-20
- **Vehicle Service Type:** Boat

## Images

![Royal Purple HMX w/Synerlec | High Mileage SAE 5W-20 Premium Synthetic Motor Oil |5 Quart | SKU: 17518 - Image 1](https://m.media-amazon.com/images/I/61DBMtMMPrL.jpg)
![Royal Purple HMX w/Synerlec | High Mileage SAE 5W-20 Premium Synthetic Motor Oil |5 Quart | SKU: 17518 - Image 2](https://m.media-amazon.com/images/I/61GPyZBhsBL.jpg)
![Royal Purple HMX w/Synerlec | High Mileage SAE 5W-20 Premium Synthetic Motor Oil |5 Quart | SKU: 17518 - Image 3](https://m.media-amazon.com/images/I/61hfvG48T0L.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ Great product
*by K***S on September 3, 2026*

I live royal purple. I have just under 300000 miles on my Ford focus and still going strong. I change the oil every 10000 miles. I use royal purple from my farm tractor down to my pressure washer it's worth the extra money

### ⭐⭐⭐⭐⭐ That OIL!
*by C***Y on August 14, 2026*

Best oil around

### ⭐⭐⭐⭐⭐ Good Oil Performance
*by M***O on April 19, 2026*

Premium Oil right here! Tends to take the tick out of the engine idle. Best price is on Amazon.

## Frequently Bought Together

- Royal Purple HMX w/Synerlec | High Mileage SAE 5W-20 Premium Synthetic Motor Oil |5 Quart | SKU: 17518
- Royal Purple HMX w/Synerlec | High Mileage SAE 5W-20 Premium Synthetic Motor Oil |1 Quart | SKU: 17511
- K&N Premium Oil Filter: Protects your Engine: Compatible with Select CHRYSLER/DODGE/ JEEP/RAM Vehicle Models (See Product Description for Full List of Compatible Vehicles), HP-7026

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**Shop now:** [https://www.desertcart.jp/products/139941913-royal-purple-hmx-w-synerlec-high-mileage-sae-5w-20](https://www.desertcart.jp/products/139941913-royal-purple-hmx-w-synerlec-high-mileage-sae-5w-20)

---

*Product available on Desertcart Japan*
*Store origin: JP*
*Last updated: 2026-10-24*