---
product_id: 650222073
title: "Mobil 1-123840 Extended Performance High Mileage 5W-20; 5QT, Gray"
brand: "mobil"
price: "€ 28.48"
currency: EUR
in_stock: false
reviews_count: 6
url: https://www.desertcart.it/products/650222073-mobil-1-123840-extended-performance-high-mileage-5w-20-5qt
store_origin: IT
region: Italy
---

# Up to 20,000 miles oil change interval Heat protection up to 500°F Cold start protection to -40°F Mobil 1-123840 Extended Performance High Mileage 5W-20; 5QT, Gray

**Brand:** mobil
**Price:** € 28.48
**Availability:** ❌ Out of Stock

## Summary

> 🚗 Keep your high-mileage engine running like new—longer, cleaner, stronger!

## Quick Answers

- **What is this?** Mobil 1-123840 Extended Performance High Mileage 5W-20; 5QT, Gray by mobil
- **How much does it cost?** € 28.48 with free shipping
- **Is it available?** Currently out of stock
- **Where can I buy it?** [www.desertcart.it](https://www.desertcart.it/products/650222073-mobil-1-123840-extended-performance-high-mileage-5w-20-5qt)

## Best For

- mobil enthusiasts

## Why This Product

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

## Key Features

- • **Fuel Economy Booster:** Meets ILSAC GF-6 standards to improve fuel efficiency and reduce wear.
- • **Triple Action+ Formula:** Maximize engine performance, protection, and cleanliness in one advanced blend.
- • **Long-Lasting Engine Care:** Go up to 20,000 miles between oil changes with confidence.
- • **High Mileage Engine Savior:** Specifically engineered for engines over 75,000 miles to extend life and reduce leaks.
- • **Extreme Temperature Defense:** Protects your engine from scorching heat and freezing cold starts.

## Overview

Mobil 1 Extended Performance High Mileage 5W-20 is a full-synthetic motor oil designed for engines with over 75,000 miles. It offers up to 20,000 miles between oil changes, superior heat protection up to 500°F, and cold start protection down to -40°F. Featuring Mobil 1’s Triple Action+ Formula, it enhances engine performance, prevents sludge buildup, and meets ILSAC GF-6 standards to protect against low-speed pre-ignition and timing chain wear, while improving fuel economy.

## Description

You trust your car to keep you going—even after 75,000 miles. Mobil 1 Extended Performance High Mileage full-synthetic motor oil 5W-20 gives engines with over 75,000 miles the extra care they need to go the distance. Formulated to help prevent leaks, it helps to protect critical engine parts for up to 20,000 miles between oil changes—guaranteed.* Mobil 1 Extended Performance utilizes Mobil 1’s Triple Action+ Formula to combine outstanding engine performance, protection, and cleanliness with the added benefit of maximized engine power. Specialty components in synthetic oil reduce friction, helping to prevent and remove sludge buildup in just one oil change. This technologically advanced formulation provides 20X better** internal engine heat protection than industry standards (up to 500 degrees Fahrenheit) as well as excellent low-temperature protection (to -40 degrees Fahrenheit)—bringing quick cold-weather starting and ultra-fast protection to your engine. Mobil 1 Extended Performance meets ILSAC GF-6 standards to help provide low-speed pre-ignition (LSPI) and timing chain wear protection while keeping your engine clean and helping to improve your fuel economy. Mobil 1 Extended Performance full-synthetic motor oil 5W-20 also helps control oxidation to prevent oil breakdown. This cutting-edge formula is recommended by ExxonMobil for all types of modern vehicles, including high-performance, turbo-charged, and supercharged gasoline and diesel multi-valve fuel-injected engines found in passenger cars, SUVs, light vans, and light trucks. Mobil 1 is America’s #1 synthetic motor oil brand at retail,*** trusted and recommended by car builders and experienced mechanics, and is the Official Motor Oil of NASCAR®. (*Protects for up to 20,000 miles or 1 year, whichever comes first. To learn more about the Mobil 1 Limited Warranty, visit Mobil.US. **Based on Seq IIIH vs industry limits. ***Source: The NPD Group/ Retail Tracking Service/ Dollar Sales/ PCMO full-synthetic/ 52 weeks ending September 30, 2023)

## Features

- Mobil 1 Extended Performance High Mileage full-synthetic motor oil 5W-20 is designed for engines with over 75,000 miles to go up to 20,000 miles between oil changes.*
- Utilizes Mobil 1’s Triple Action+ Formula to combine outstanding engine performance, protection, and cleanliness with the added benefit of power
- Meets ILSAC GF-6 standards to help provide low-speed pre-ignition (LSPI) and timing chain wear protection while keeping your engine clean and helping to improve your fuel economy
- Provides excellent internal engine heat protection (up to 500 degrees F) and low temperature protection (to -40 degrees F)
- Helps extend engine life by working to prevent damaging deposits and sludge buildup

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Manufacturer | Mobil 1 |
| Brand | Mobil |
| Model | Mobil 1 Extended Performance High Mileage |
| Product Dimensions | 11.18 x 20.57 x 32.16 cm; 4.2 kg |
| Item model number | Extended Performance High Mileage |
| Manufacturer Part Number | 123840 |
| OEM Part Number | 123840 |
| Item Weight | 4.2 Kilograms |
| Viscosity | 5W-20 |

## Product Details

- **Viscosity:** 5W-20
- **Brand:** Mobil
- **Liquid volume:** 160 Fluid Ounces
- **Package information:** Bottle
- **Vehicle service type:** Car

## Images

![Mobil 1-123840 Extended Performance High Mileage 5W-20; 5QT, Gray - Image 1](https://m.media-amazon.com/images/I/71dYXDCPeuL.jpg)
![Mobil 1-123840 Extended Performance High Mileage 5W-20; 5QT, Gray - Image 2](https://m.media-amazon.com/images/I/61y-vk2gjUL.jpg)
![Mobil 1-123840 Extended Performance High Mileage 5W-20; 5QT, Gray - Image 3](https://m.media-amazon.com/images/I/71DaTYBs-gL.jpg)
![Mobil 1-123840 Extended Performance High Mileage 5W-20; 5QT, Gray - Image 4](https://m.media-amazon.com/images/I/81E+F2lSi0L.jpg)
![Mobil 1-123840 Extended Performance High Mileage 5W-20; 5QT, Gray - Image 5](https://m.media-amazon.com/images/I/61aLeFsl7rL.jpg)

## Available Options

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

## Questions & Answers

**Q: what is the oil change interval for mobil 1 advanced full synthetic?every 5000miles or 10000miles?**
A: The official ExxonMobil warranty interval for Mobil 1 FS 0W-40 (aka European Car Formula) is 10,000 miles or your OEM recommended interval, whichever is greater. This comes with the further stipulation of an oil change every 12 months if you don't reach a mileage cap, first. If your vehicle is still under manufacturer's warranty, you'll want to follow those OEM service intervals, though.

**Q: I have 80k miles on my nissan murano 2010 and i don't have oil leaking problem. should i still use this oil? or  'mobil1 extended performance' version**
A: It's really up to you. I'm not completely sure if it's a seal conditioner additive that differentiates the extended performance from the regular mobil 1 but things tend to wear with age. I  put it in my 2008 V8 Pathfinder which didn't have an oil leak issue and it works well. I converted over when it had about 90K on it. I also have a 19 year old car that was leaking oil and was significantly reduced when I used the Extended Mobil 1.

**Q: Would this be safe to use on a Lawn Mower that came with an "SAE 30 Small Engine Motor Oil"?**
A: As other astute people here say, generally use SAE 30 or 40 straight weight.  Most small engines use solid lifters and need high viscosity to protect motor.  Most small engines are SPLASH oiled.  Meaning no oil pump.  Although other oil seems to work, it may be prematurely wearing your cam shaft lobes.  I also recommend periodically adding ZDDP or zinc additive to protect cam and engine. Now of course if your owners manuals says use 10w-40 do that.  It may be a modern oil pump motor.

**Q: Is this ok for 2013 Mazda 3 Skyactive 2?**
A: Been running Mobil 1 Full Synthetic Fuel Economy in a 2014 Mazda 6 that's at 55,000 miles now, no known issues, changing it every 7500 miles as specified in the owners manual.  In checking around at some Mazda forums back when the car was new, other than the bottles of factory Mazda oil available at the dealer counter, this oil seemed to be one of the consensus picks for SkyActiv engines.  The factory Mazda oil has a molybdenum additive and is much more expensive than this Mobil 1.  Some suggested getting a molybdenum additive to go with the Mobil 1, however I've never done this.  (Note, if you go to a Mazda dealer for a synthetic oil change, it will almost certainly come from a giant tank of Castrol synthetic or whatever.   Ask 'em.  To get the pricey factory Mazda oil, you need to go to the dealer parts department).

## Customer Reviews

### ⭐⭐⭐⭐⭐ Original
*by S***N on 25 July 2025*

Original Mobil 1 Oil High Quality

### ⭐⭐⭐⭐⭐ اللزوجه
*by N***R on 4 February 2025*

زيت ممتاز و انصح بالشراء مره اخره

### ⭐⭐⭐⭐⭐ Quality oil as always
*by S***M on 12 October 2023*

Durable oil with long lasting effect.

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*Product available on Desertcart Italy*
*Store origin: IT*
*Last updated: 2026-01-24*