---
product_id: 72118943
title: "Briggs 4PK Vanguard 15W-50 Heavy Duty Synthetic Oil 5-Quart 100170"
brand: "briggs & stratton"
price: "$223.85"
currency: USD
in_stock: true
reviews_count: 8
category: "Briggs & Stratton"
url: https://www.desertcart.us/products/72118943-briggs-4pk-vanguard-15w-50-heavy-duty-synthetic-oil-5
store_origin: US
region: United States of America
---

# Long-lasting synthetic durability High-temp resilience up to 130°F Optimized for Big Block Vanguard engines Briggs 4PK Vanguard 15W-50 Heavy Duty Synthetic Oil 5-Quart 100170

**Brand:** briggs & stratton
**Price:** $223.85
**Availability:** ✅ In Stock

## Summary

> ⚙️ Power your commercial gear with the oil that never quits!

## Quick Answers

- **What is this?** Briggs 4PK Vanguard 15W-50 Heavy Duty Synthetic Oil 5-Quart 100170 by briggs & stratton
- **How much does it cost?** $223.85 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.us](https://www.desertcart.us/products/72118943-briggs-4pk-vanguard-15w-50-heavy-duty-synthetic-oil-5)

## Best For

- briggs & stratton enthusiasts

## Why This Product

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

## Key Features

- • **Bulk 5-Quart Size:** Larger volume means fewer refills, keeping your workflow uninterrupted and efficient.
- • **Synthetic Strength:** Full synthetic formula reduces engine wear and extends equipment life under heavy-duty conditions.
- • **Engineered for Extreme Heat:** Performs flawlessly in ambient temps from +20°F to +130°F, perfect for relentless commercial use.
- • **Tailored for Vanguard Power:** Specifically formulated to maximize protection and efficiency in Big Block Vanguard engines.
- • **Dealer-Recommended Reliability:** Trusted by pros and dealers alike for consistent, top-tier engine performance every time.

## Overview

Briggs & Stratton's Vanguard 15W-50 Heavy Duty Synthetic Oil is a premium full synthetic lubricant designed for Big Block Vanguard engines in commercial and continuous-use equipment. Engineered to withstand high ambient temperatures up to 130°F, it delivers superior engine protection, reduces wear, and enhances performance, making it the go-to choice for professionals demanding reliability and longevity from their machines.

## Description

Briggs & Stratton new Vanguard 15W-50 full synthetic engine oil, specially engineered for engines installed in commercial equipment and continuous-use applications that are operated in high-temperature environments. This oil is designed for ambient temperatures between +20°F (-7°C) to +130°F (54°C), making it an excellent choice for commercial cutting equipment and other demanding operations exposed to high-temperature conditions.

Review: Reliable oil for heavy commercial use — dealer recommended and it shows - I use this on my Ferris mower for commercial work and have been doing oil changes with it for several years now. My dealer pointed me toward this oil and I've never had a reason to switch. When you're running a mower hard professionally, you don't want to mess around with what goes in the engine. This oil has never let me down — consistent performance change after change, and the engine runs exactly how it should. If you have a Ferris with a Briggs & Stratton engine and you're not sure what oil to use, I'd say talk to your dealer — and don't be surprised if this is exactly what they recommend too.
Review: Excellent Performance and Long-Lasting Protection! - I’ve been using the Briggs & Stratton 100170 Vanguard 15W-50 Heavy Duty Synthetic Oil in my equipment for a while now, and I am incredibly impressed! This oil provides outstanding engine protection, even under the toughest working conditions. I’ve noticed a significant improvement in engine performance—smoother starts, quieter operation, and overall better fuel efficiency. It’s specifically designed for heavy-duty use, and it really shows in how well it performs in my lawn mowers, generators, and other power equipment. The synthetic formula makes this oil incredibly durable, and I’ve experienced less wear and tear on my engines compared to regular oils. The 5-quart size is perfect for those larger engines, reducing the number of refills needed. This oil really helps extend the life of my machines, and I feel confident that I’m getting the best protection for my investment. If you’re looking for a high-quality, long-lasting oil for your heavy-duty equipment, I highly recommend the Briggs & Stratton Vanguard Synthetic Oil.

## Features

- Genuine Vanguard 15W-50 5-Quart Synthetic Oil
- Designed for use in the Big Block Vanguard engines. Specially engineered for engines installed in commercial equipment and continuous-use applications that are operated in high-temperature environments. This oil is designed for ambient temperatures between +20°F (-7°C) to +130°F (54°C)

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B07982XCHQ |
| Automotive Fit Type | Universal Fit |
| Best Sellers Rank | #70,218 in Automotive ( See Top 100 in Automotive ) #164 in Powersports Engine Oil #4,098 in Powersports Parts |
| Brand | Briggs & Stratton |
| Brand Name | Briggs & Stratton |
| Compatible with Vehicle Type | Various |
| Container Type | Bottle |
| Customer Reviews | 4.8 out of 5 stars 540 Reviews |
| Global Trade Identification Number | 00047282054888 |
| Item Weight | 0.01 Ounces |
| Liquid Volume | 4731.76 Milliliters |
| Manufacturer | Briggs and Stratton |
| Manufacturer Part Number | 100170 |
| Model Number | 100170 |
| Package Information | Bottle |
| SAE J300 Viscosity Grade | 15W-50 |
| Size | 5 quarts |
| UPC | 047282054888 |
| Unit Count | 160.0 Fluid Ounces |
| Vehicle Service Type | Various |
| Viscosity Level | Medium to High |

## Product Details

- **Brand:** Briggs & Stratton
- **Liquid Volume:** 4731.76 Milliliters
- **Package Information:** Bottle
- **Vehicle Service Type:** Various
- **Viscosity:** 15W 50

## Images

![Briggs 4PK Vanguard 15W-50 Heavy Duty Synthetic Oil 5-Quart 100170 - Image 1](https://m.media-amazon.com/images/I/61rHozR4E8L.jpg)

## Questions & Answers

**Q: Can 15w50 vanguard synthetic oil be used on my Toro Recycler 22 inch mower ?**
A: I would not. I would stick to a good 30 weight or 10w-30. Splash type oiling systems are not good with thick oils.

**Q: I have an older vanguard and the book says sae 30 or 10w-30, which i have done. i have never had one die, the oldest is  32. now which oil?.**
A: I use the 10 30 vanguard synthetic oil in all of my equipment. I am commercial and the mower. Do you use oil because they are air cooled and is to be expected of some usage between oil changes. My units are two to 14 years old and I have yet to have a problem with any part of the engines hope this helps

**Q: Can this oil be used in a motorcycle?**
A: Technically yes, but I would check on the manufacturers specs of the bike before using.

**Q: Does this meet SAE standards?**
A: I would assume so. It is the oil Briggs recommends. Doubt they would recommend sub standard oil

## Customer Reviews

### ⭐⭐⭐⭐⭐ Reliable oil for heavy commercial use — dealer recommended and it shows
*by R***L on March 25, 2026*

I use this on my Ferris mower for commercial work and have been doing oil changes with it for several years now. My dealer pointed me toward this oil and I've never had a reason to switch. When you're running a mower hard professionally, you don't want to mess around with what goes in the engine. This oil has never let me down — consistent performance change after change, and the engine runs exactly how it should. If you have a Ferris with a Briggs & Stratton engine and you're not sure what oil to use, I'd say talk to your dealer — and don't be surprised if this is exactly what they recommend too.

### ⭐⭐⭐⭐⭐ Excellent Performance and Long-Lasting Protection!
*by M***E on April 24, 2025*

I’ve been using the Briggs & Stratton 100170 Vanguard 15W-50 Heavy Duty Synthetic Oil in my equipment for a while now, and I am incredibly impressed! This oil provides outstanding engine protection, even under the toughest working conditions. I’ve noticed a significant improvement in engine performance—smoother starts, quieter operation, and overall better fuel efficiency. It’s specifically designed for heavy-duty use, and it really shows in how well it performs in my lawn mowers, generators, and other power equipment. The synthetic formula makes this oil incredibly durable, and I’ve experienced less wear and tear on my engines compared to regular oils. The 5-quart size is perfect for those larger engines, reducing the number of refills needed. This oil really helps extend the life of my machines, and I feel confident that I’m getting the best protection for my investment. If you’re looking for a high-quality, long-lasting oil for your heavy-duty equipment, I highly recommend the Briggs & Stratton Vanguard Synthetic Oil.

### ⭐⭐⭐⭐⭐ It's made for it
*by D***K on November 3, 2025*

Best price i could find for the 37hp big block on my mower. This is on the factory list for best lubrication in a large temperature range. It works and is high quality. I think I may go with a slightly thinner oil after the warranty is up. Should get better fuel efficiency out of 10w40. The engine should run plenty col with thinner as well.

## Frequently Bought Together

- Briggs & Stratton 100170 Vanguard 15W-50 Heavy Duty Synthetic Oil, 5 Quart
- Briggs & Stratton 842921 Oil Filter for BIG BLOCK Engines

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*Product available on Desertcart United States of America*
*Store origin: US*
*Last updated: 2026-07-08*