---
product_id: 358206737
title: "11745-6PK HMX SAE 5W-30 High-Mileage Synthetic Motor Oil - 1 qt. (Case of 6)"
brand: "royal purple"
price: "€ 624.54"
currency: EUR
in_stock: true
url: https://www.desertcart.hr/products/358206737-11745-6pk-hmx-sae-5w-30-high-mileage-synthetic-motor
store_origin: HR
region: Croatia
---

# Extended oil drain intervals with superior oxidation resistance Zinc/phosphorus anti-wear compounds for engine longevity 5W-30 viscosity for all-season engine protection 11745-6PK HMX SAE 5W-30 High-Mileage Synthetic Motor Oil - 1 qt. (Case of 6)

**Brand:** royal purple
**Price:** € 624.54
**Availability:** ✅ In Stock

## Summary

> 🚗💜 Drive smarter, not harder — unleash high-mileage horsepower!

## Quick Answers

- **What is this?** 11745-6PK HMX SAE 5W-30 High-Mileage Synthetic Motor Oil - 1 qt. (Case of 6) by royal purple
- **How much does it cost?** € 624.54 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.hr](https://www.desertcart.hr/products/358206737-11745-6pk-hmx-sae-5w-30-high-mileage-synthetic-motor)

## 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

- • **Start-Up Shield:** Ionic attraction to metal surfaces protects engine during cold starts
- • **Friction Fighter:** Minimizes metal-to-metal contact for peak engine efficiency
- • **Engine Revival Power:** Specifically engineered to restore performance in engines over 75,000 miles
- • **Long-Lasting Protection:** Outstanding oxidation resistance extends oil change intervals
- • **Seal Revitalization Tech:** Chemically enhances hardened seals to reduce oil consumption

## Overview

Royal Purple 11745-6PK HMX SAE 5W-30 is a high-mileage synthetic motor oil designed to protect and revitalize engines with over 75,000 miles. Featuring advanced zinc/phosphorus anti-wear additives and proprietary technology, it reduces friction, restores seals, and extends oil drain intervals for superior engine performance and longevity.

## Description

Royal Purple HMX SAE 5W-30 High-Mileage Synthetic Motor Oil, 1 quart (Case of 6) is specifically designed to minimize wear and restore lost performance in engines with more than 75,000 miles. Formulated with robust zinc/phosphorus anti-wear compounds combined with Royal Purple's proprietary additive technology Synerlec, HMX is chemically enhanced to revitalize hardened seals, reducing oil consumption common in high-mileage engines. In addition, HMX is fortified with stout detergents to remove engine build-up and deposits, maintain cleanliness and promote engine longevity. The advanced Synerlec technology in HMX provides exceptional film strength, reducing friction and metal to metal contact for peak engine performance. It also provides outstanding oxidation resistance to safely extend oil drain intervals, and an ionic attraction to metal surfaces, providing protection and minimizing wear at start-up. Engineering formulations is a balancing act as engine oil has several key functions to perform. Higher mileage engines require a shift in this balance in certain regards as compared to new engines, such as anti-wear, detergency and preserving and restoring seal elasticity. Recommended for gasoline passenger car and light-truck engines beyond 75,000 miles, HMX can safely extend oil drain intervals up to 15,000 miles or 12 months in unmodified, mechanically-sound engines with proper filtration. When using HMX, Royal Purple recommends first performing two short clean-up drain intervals of 3,000 miles each with HMX to thoroughly clean the engine before extending drain intervals. Royal Purple HMX is suitable for use in engines specifying API service SJ, SL, SM and SN.

## Features

- Specifically designed to minimize wear and restore lost performance in engines with more than 75,000 miles
- Formulated with robust zinc/phosphorus anti-wear compounds combined with Royal Purple's proprietary additive technology
- HMX is chemically enhanced to revitalize hardened seals, reducing oil consumption common in high-mileage engines
- Reduces friction and metal-to-metal contact for peak engine performance
- Also provides outstanding oxidation resistance to safely extend oil drain intervals, and an ionic attraction to metal surfaces, providing protection and minimizing wear at start-up

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Viscosity | 5W-30 |
| Brand | Royal Purple |
| Vehicle Service Type | Car |
| UPC | 641330117459 |
| Global Trade Identification Number | 00641330117459 |
| Manufacturer | Royal Purple |
| Size | 1 Quart, Case of 6 |
| OEM Part Number | 11745 |
| Model | 11745-6PK |
| Product Dimensions | 22.28 x 19.11 x 24.56 cm; 5.53 kg |
| Item model number | 11744 |
| Manufacturer Part Number | 11745-6PK |
| Colour | purple |
| Assembly Required | No |
| Country of Origin | USA |
| Item Weight | 5 kg 530 g |

## Product Details

- **Viscosity:** 5W-30
- **Brand:** Royal Purple
- **Vehicle Service Type:** Car
- **UPC:** 641330117459
- **Global Trade Identification Number:** 00641330117459

## Images

![11745-6PK HMX SAE 5W-30 High-Mileage Synthetic Motor Oil - 1 qt. (Case of 6) - Image 1](https://m.media-amazon.com/images/I/71FYuclDYIL.jpg)

## Available Options

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

## Questions & Answers

**Q: Is this oil vw 502 rated**
A: I don’t know what your asking and I’m not gonna gts it, but, this is the best oil you will ever use.  I use it in my 95 Bronco, 17 Explorer Platinum, and my 18 King Ranch.  The bronco has 182K on it and uses almost a quart between 5K oil changes.  Bottom end will be slick when I ever have to take it out.  I run all royal purple fluids in trans and rears.  I believe in this oil as much as I believe in Jesus!

**Q: whats has a better VI this or the 10w30? Or  better numbers? htsc?**
A: Which VI test, Kinematic or Dynamic? So it’s not easy to give an easy answer. If you have an older car with lots of miles, then 10w30 can be the better choice over 5w30 in a Dynamic VI test; however, if your car isn’t really old then 5w30 is always the better choice. You can’t compare the VI because the 10w30 will always be lower, as the range between winter and operating temperature is less. I think Group is more important to you so you really should be looking for Group V oils, like Motul. They use ester, but the price obviously goes up, eh.

**Q: if anybody has used this on a 1992 firebird how is it?**
A: You should always mention your engine in your vehicle as well as the environment and type of use the vehicle gets when asking questions.  What specifics are you seeking when you ask "How is it?".
It is really not a reasonable question and I think you would greatly benefit by participating in some motor oils discussions and learn about motor oils.  Bobs The Oil Guy is the most popular I know of.
It is typically overpriced in my opinion.  The closes thing I have to your vehicle is a 1998 Trans Am WS6 with 5.7L LS1 engine with various modifications and dyno tune.  I don't use the current formulations of RP.  I have had reason to mostly tear my engine down and it shows no signs of premature wear on anything which is really how you will truly know how it is doing.  I spent over 4 years studying motor oils and filters and I use different ones in both my 4 wheeled vehicles and superbikes.  Superbikes get group V Ester basestock oils from French and German manufacturers.  Street cars including the TA get group III synthetics and synthetic filter media oil filters.  I use the rebates that come out every few months so it saves me a lot of money and I change my oil at less frequent mileage than recommended.  It would be fantastic if you were to learn as much as you needed to know about motor oils and filters and make your own informed decision.  And remember that formulations for all motor oils are constantly changing (and they don't mention it) and new products come out so what you might select today may not be what you select next year.

**Q: Is this Group IV oil?**
A: NO is the answer.  And there are only about 5% that are TRUE SYNTHETICS.  This is a group III "synthetic"  See Mobil vs Castrol and you will see why that law suit determined that in the US you can call oils that use CONVENTIONAL base stocks, Dino oil however you want to say it that has been highly refined through processed such as hydrocracking but would NOT be legal to sell with a label calling in synthetic in many places such as European countries like Germany.  Royal Purple USED to be considered a P.A.O. oil but changed without notice to customers (like any oil company would) but of course did not alter the price.  Remember there are also Group IV oils which are Ester based which is what I use in my motorcycles.  Though todays group III oils can be some of the best choices for your average passenger vehicle.  They are also cheaper with brands like Mobil 1 and Pennoil Platinum Ultra running rebates of at least $12 or more every few months.  With the cost of a 5 quart jug on sale on Amazon or any day at "Wal ly World" going for $24 you end up paying $12 for 5 quarts which means you can save money and if you are on the fence change it more often.  Remember an oil filter removes particulate matter from the oil NOT byproducts of the combustion process including things like acids.  So you do want to change both the oil and filter.  Use your manufacturers owners manual as your first maintenance schedule to follow and go from there.  Oil itself does not "wear out' but the additives do deplete including things like viscosity modifiers and detergents and contain those build ups of contaminants so changing your oil and filter is important and is vehicle and use specific.  Anyone that gives advice to others on what viscosity to use or what oil change intervals are appropriate without even knowing what the vehicle and use are should be ignored and shunned.

## Frequently Bought Together

- Royal Purple (11745-6PK HMX SAE 5W-30 High-Mileage Synthetic Motor Oil - 1 Quart, (Case of 6)
- Royal Purple 341777 Royal Purple Extended Life Oil Filter

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*Product available on Desertcart Croatia*
*Store origin: HR*
*Last updated: 2026-07-11*