---
product_id: 11118212
title: "31520 HPS 5W-20 High Performance Street Synthetic Motor Oil with Synerlec - 1 Quart Bottle"
brand: "royal purple"
price: "¥9624"
currency: JPY
in_stock: true
reviews_count: 13
category: "Royal Purple"
url: https://www.desertcart.jp/products/11118212-31520-hps-5w-20-high-performance-street-synthetic-motor-oil
store_origin: JP
region: Japan
---

# Synerlec additive boosts wear protection Increases horsepower & torque 5W-20 SAE viscosity for optimal temp performance 31520 HPS 5W-20 High Performance Street Synthetic Motor Oil with Synerlec - 1 Quart Bottle

**Brand:** royal purple
**Price:** ¥9624
**Availability:** ✅ In Stock

## Summary

> ⚡ Unlock your engine’s hidden power with Royal Purple’s high-performance synthetic oil!

## Quick Answers

- **What is this?** 31520 HPS 5W-20 High Performance Street Synthetic Motor Oil with Synerlec - 1 Quart Bottle by royal purple
- **How much does it cost?** ¥9624 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/11118212-31520-hps-5w-20-high-performance-street-synthetic-motor-oil)

## 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

- • **Synerlec Power Boost:** Proprietary additive technology reduces metal wear under extreme conditions for lasting engine health.
- • **Performance Amplifier:** Formulated to increase horsepower and torque, giving your ride that extra edge on the road.
- • **Precision Viscosity Control:** Engineered 5W-20 grade ensures smooth starts and peak performance across temperatures.
- • **Advanced Oxidation Stability:** Keeps oil fresh longer, protecting your engine from breakdown and sludge build-up.
- • **Tailored for High-Performance Rides:** Vehicle-specific fit designed for modified and high-performance engines beyond warranty life.

## Overview

Royal Purple 31520 HPS 5W-20 is a fully synthetic motor oil fortified with Synerlec and zinc/phosphorus additives, designed to maximize horsepower, torque, and wear protection for high-performance and modified engines. Its advanced viscosity and oxidation stability ensure superior engine cleanliness and durability, making it the go-to choice for drivers seeking enhanced performance beyond factory warranty.

## Description

Motor oil is made from crude oil and is used to lubricate, clean, and cool engines. Types of motor oil include conventional, synthetic, diesel, bio-based, hybrid (blends of conventional and synthetic), and recycled oils. Motor oil varies in weight and viscosity, as well as additives that some manufacturers add to the oil during the refining process. A numerical code system created by the Society of Automotive Engineers (SAE) grades motor oils according to viscosity, the higher the number between 0 and 60, the more viscous (thicker) the oil is. Most consumer motor oils are graded by two numbers, with the first number indicating cold weather (Winter or "W") performance. With a weight of SAE 5W-30, this oil has an SAE viscosity rating of 5 in cold temperatures and a rating of 30 at normal operating temperature. This oil is fully synthetic, meaning crude oil is not used in making it. Synthetic oil often provides superior mechanical performance over traditional motor oil, including increased gas mileage and reduced engine wear at extreme temperatures. Its complex method of production means it can often cost more than conventional motor oil. Royal Purple HPS Series motor oil is specifically formulated to maximize performance and meet the demands of high performance and modified engines. Fortified with a high level of zinc/phosphorus anti-wear additive and proprietary Synerlec additive technology, this unique blend outperforms leading synthetics and conventional lubricants. Available viscosities include 5W-20, 5W-30, 10W-30, 10W-40 and 20W-50. HPS is recommended for vehicles no longer under manufacturer warranty and for those seeking a higher level of performance and protection. Royal Purple's HPS Series of motor oil responds to increased pressure with increased viscosity. It's advanced additive technologies, such as Synerlec improves the condition of metal-to-metal contact under severe conditions for greater protection.

Review: A RX8 owner's perspective - If you are familiar with automobiles and engines you will know that the rotary engine can be a weird animal. The oil system is extremely important due to the fact that it is getting injected into the "cylinders" or rotors when the engine is running regularly. I was very hesitant about putting an all synthetic oil into my engine because of mixed ideas about oil with the Renesis engine. Not to mention the owner's manual says its a bad idea but every specialized oil for rotaries from Japan is synthetic. I have over 144K on my engine and want to extend the life of the engine before I have to rebuild the apex and side housing seals. I had some worries about synthetic oils because of deposits which can kill a rotary engine. I wanted to make sure whatever I was putting in would burn off clean and keep my apex seals, the life of the engine, in tact. I have used one full 12 quart box of this oil and what I have to say about the product when it comes to rotaries is that it seems to do very well. I haven't had to use as much oil as when I was using Pennzoil standard oil. Usually when using my old brand I had to be psycho about monitoring the oil level. This stuff seems to go a bit further and the burn off doesn't have much smell at all. When you hit 9RPMS with the Renesis engine you can typically smell an oil burn off which is still present with this but not as severe. The engine sounds like its running quieter but that could just be my imagination. I have to give props to the Royal Purple team that included information on their website about Rotary engines and their relation to Royal Purple they are what sold me on it. I will continue using this product even if it is more expensive. I love my car and keeping its heart(engine) alive is a very big deal to me. If you're wondering, the product really is purple.
Review: Not a budget oil, but worth it!!! - This Royal Purple oil is straight fire! Has a premium feel, great protection, and it works like a champ under load. I used it in my Mustang and it smooths out the engine, quiets the noise, and holds up strong even in heat. No sludge or breakdown. If you want a smarter oil that works as hard as your ride, this is it. No oil leaks, and is fully synthetic. No burning smell. It’s not cheap but worth the money for sure!

## Features

- Maximum wear protection
- Increase horsepower and torque
- Advanced protection for performance and modified engines
- Exceptional oxidation stability
- Fortified with zinc/phosphorus anti-wear additive
- Fit type: Vehicle Specific

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B007OC9JAO |
| Automotive Fit Type | Vehicle Specific Fit |
| Best Sellers Rank | #7,339 in Automotive ( See Top 100 in Automotive ) #98 in Motor Oils |
| Brand | Royal Purple |
| Brand Name | Royal Purple |
| Compatible with Vehicle Type | high performance vehicles |
| Container Type | Bottle |
| Customer Reviews | 4.8 out of 5 stars 474 Reviews |
| Flash Point | 232 °C |
| Global Trade Identification Number | 00641330315206 |
| Included Components | Auto part, Automotive Accessories, Replacement and Performance parts |
| Item Type Name | Hps 5W-20 Synthetic Motor Oil With Synerlec |
| Item Weight | 1.5 pounds |
| Liquid Volume | 1 quarts |
| Manufacturer | Royal Purple |
| Manufacturer Part Number | 31520 |
| Manufacturer Warranty Description | Manufacturer Warranty |
| Model Number | ROY31520 |
| Number of Packs | 1 |
| Package Information | Bottle |
| SAE J300 Viscosity Grade | 5W-20 |
| Size | 1 Quart |
| UPC | 641330315206 |
| Unit Count | 32 Fluid Ounces |
| Vehicle Service Type | high performance vehicles |
| Viscosity Level | Medium to High |

## Product Details

- **Brand:** Royal Purple
- **Liquid Volume:** 1 quarts
- **Package Information:** Bottle
- **SAE J300 Viscosity Grade:** 5W-20
- **Vehicle Service Type:** high performance vehicles

## Images

![31520 HPS 5W-20 High Performance Street Synthetic Motor Oil with Synerlec - 1 Quart Bottle - Image 1](https://m.media-amazon.com/images/I/71o7n6g4PPL.jpg)

## Available Options

This product comes in different **Size, Style** options.

## Customer Reviews

### ⭐⭐⭐⭐⭐ A RX8 owner's perspective
*by R***N on September 9, 2013*

If you are familiar with automobiles and engines you will know that the rotary engine can be a weird animal. The oil system is extremely important due to the fact that it is getting injected into the "cylinders" or rotors when the engine is running regularly. I was very hesitant about putting an all synthetic oil into my engine because of mixed ideas about oil with the Renesis engine. Not to mention the owner's manual says its a bad idea but every specialized oil for rotaries from Japan is synthetic. I have over 144K on my engine and want to extend the life of the engine before I have to rebuild the apex and side housing seals. I had some worries about synthetic oils because of deposits which can kill a rotary engine. I wanted to make sure whatever I was putting in would burn off clean and keep my apex seals, the life of the engine, in tact. I have used one full 12 quart box of this oil and what I have to say about the product when it comes to rotaries is that it seems to do very well. I haven't had to use as much oil as when I was using Pennzoil standard oil. Usually when using my old brand I had to be psycho about monitoring the oil level. This stuff seems to go a bit further and the burn off doesn't have much smell at all. When you hit 9RPMS with the Renesis engine you can typically smell an oil burn off which is still present with this but not as severe. The engine sounds like its running quieter but that could just be my imagination. I have to give props to the Royal Purple team that included information on their website about Rotary engines and their relation to Royal Purple they are what sold me on it. I will continue using this product even if it is more expensive. I love my car and keeping its heart(engine) alive is a very big deal to me. If you're wondering, the product really is purple.

### ⭐⭐⭐⭐⭐ Not a budget oil, but worth it!!!
*by I***N on October 9, 2025*

This Royal Purple oil is straight fire! Has a premium feel, great protection, and it works like a champ under load. I used it in my Mustang and it smooths out the engine, quiets the noise, and holds up strong even in heat. No sludge or breakdown. If you want a smarter oil that works as hard as your ride, this is it. No oil leaks, and is fully synthetic. No burning smell. It’s not cheap but worth the money for sure!

### ⭐⭐⭐⭐⭐ Very happy with the result
*by R***R on April 27, 2014*

When I first put regular royal purple into my car, I was very happy with the result, it ran great. I started to wonder what is the different between royal purple regular and hps. It took me a while, after I did some research. The customer service from royal purple is awesome, they answered my questions since my car is 2 years old. I made a decision to purchase royal purple hps. I was nervous putting the royal purple hps oil in my car when I read negative review on internet. Everything I have updated, such as k and n air filter, PVC valve, replaced spark plug, and I put nitrogen in my tires. When I used regular oil from the car dealership, the city is 21. I have never gain more mpg like royal purple. With their regular royal oil, I average get around 2.3 to 2.7 mpg. With royal purple hps, I average get between 2.7 to 4 mpg. HPS took me more mpg and different level. It's quieter, and more power. I get between 45 to 62.23 extra miles from full to empty gas tank, depend on whereever i go. I also used royal purple oil filter. I would not go back to regular oil. I will use this brand of royal purple hps for a long time. Best of all, amazon have the best price in the marketing.

## Frequently Bought Together

- Royal Purple 31520 HPS 5W-20 High Performance Street Synthetic Motor Oil with Synerlec - 1 Quart Bottle
- Royal Purple 51520 API-Licensed SAE 5W-20 High Performance Synthetic Motor Oil - 5 Quart, (Model: ROY51520)
- K&N Premium Oil Filter: Protects your Engine: Compatible with Select ALFA ROMEO/BUICK/CHEVROLET/DODGE Vehicle Models (See Product Description for Full List of Compatible Vehicles), HP-1017

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*Product available on Desertcart Japan*
*Store origin: JP*
*Last updated: 2026-11-01*