---
product_id: 505691431
title: "5W-40 Fully Synthetic Engine Oil ACEA A3/B4 API SN 20 Litre 20L"
brand: "smith & allan"
price: "$616.96"
currency: USD
in_stock: true
url: https://www.desertcart.us/products/505691431-5w-40-fully-synthetic-engine-oil-acea-a3-b4-api
store_origin: US
region: United States of America
---

# Thermal Stability 5W-40 Viscosity Wear Protection 5W-40 Fully Synthetic Engine Oil ACEA A3/B4 API SN 20 Litre 20L

**Brand:** smith & allan
**Price:** $616.96
**Availability:** ✅ In Stock

## Summary

> 🚗 Keep Your Engine Roaring with Confidence!

## Quick Answers

- **What is this?** 5W-40 Fully Synthetic Engine Oil ACEA A3/B4 API SN 20 Litre 20L by smith & allan
- **How much does it cost?** $616.96 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/505691431-5w-40-fully-synthetic-engine-oil-acea-a3-b4-api)

## Best For

- smith & allan enthusiasts

## Why This Product

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

## Key Features

- • **Shear Stability:** Designed to maintain viscosity under extreme conditions.
- • **Ultimate Protection:** Excellent wear protection against rust and corrosion.
- • **Unmatched Performance:** Stay in grade performance for optimal engine efficiency.
- • **Clean Engine Guarantee:** Controls sludge and piston deposits for a cleaner engine.
- • **Stability Under Pressure:** Oxidative and thermally stable for high-performance demands.

## Overview

Smith & Allan's 5W-40 Fully Synthetic Engine Oil is engineered for superior performance and protection. With a viscosity rating of 5W-40, this oil ensures optimal engine efficiency while providing excellent wear protection against rust and corrosion. Its oxidative and thermal stability makes it ideal for high-performance engines, while its shear stability guarantees consistent viscosity under pressure. Plus, it effectively controls sludge and piston deposits, ensuring a cleaner engine for longer-lasting performance.

## Description

5W-40 Fully Synthetic Engine Oil ACEA A3/B4 API SN 20 Litre 20L

## Features

- Stay in grade performance
- Excellent wear protection
- Protects against rust and corrosion
- Oxidative and thermally stable
- Excellent shear stability
- Control of sludge and piston deposits

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Manufacturer | Smith & Allan |
| Brand | Smith & Allan |
| Model | Momentum FS 5W-40 |
| Item Weight | 20 kg |
| Item model number | MOMFS5W4020L |
| Manufacturer part number | MOMFS5W4020L |
| Item Weight | 20 kg |
| Viscosity | 5W 40 sae_grade |

## Product Details

- **Viscosity:** 5W 40 sae_grade
- **Brand:** Smith & Allan
- **Vehicle service type:** Car
- **Manufacturer:** Smith & Allan
- **Size:** 20 Litre

## Images

![5W-40 Fully Synthetic Engine Oil ACEA A3/B4 API SN 20 Litre 20L - Image 1](https://m.media-amazon.com/images/I/71ZPHtLPorL.jpg)

## Frequently Bought Together

- 5W-40 Fully Synthetic Engine Oil ACEA A3/B4 API SN 20 Litre 20L
- Mannol 20 Litre Energy 5W-30 Engine Oil 7511 API SN/CH-4 ACEA A3/B4 Universal Synthetic Ester Technology

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---

*Product available on Desertcart United States of America*
*Store origin: US*
*Last updated: 2026-02-09*