Converting an Older Mercedes Diesel to Run on Vegetable Oil

Sep 24, 2022


Welcome to Grafco Electric's comprehensive guide on converting an older Mercedes Diesel to run on vegetable oil (SVO). If you're looking for an eco-friendly and cost-effective alternative fuel solution for your vehicle, this is the right place to be. Our team of experts at Grafco Electric has years of experience in helping individuals and businesses make the switch to vegetable oil as a fuel source. In this guide, we will take you through the entire process step by step, ensuring that you have all the information you need to successfully convert your Mercedes Diesel. Let's dive in!

Why Consider Converting to Vegetable Oil (SVO)?

Before we delve into the conversion process, let's discuss why you should consider converting to vegetable oil as a fuel source for your older Mercedes Diesel. There are several advantages to making this switch:

  • Cost savings: Vegetable oil is typically cheaper than traditional diesel fuel, allowing you to save on fuel costs in the long run.
  • Environmental benefits: Vegetable oil is a renewable resource, which means it has a lower carbon footprint compared to fossil fuels. By converting to SVO, you can significantly reduce your vehicle's greenhouse gas emissions.
  • Increased engine lifespan: SVO has better lubricating properties than diesel fuel, which can potentially lead to increased engine longevity and reduced maintenance costs.
  • Support for local farmers: Using vegetable oil as a fuel source promotes the use of locally sourced, sustainable agricultural products, supporting local farmers and communities.

Step-by-Step Guide to Converting Your Mercedes Diesel

Step 1: Gather the Necessary Equipment

Before you begin the conversion process, it's important to gather all the necessary equipment. Here's a list of items you will typically need:

  • Tank for storing the vegetable oil
  • Heated fuel lines or a heat exchanger
  • Conversion kit, including a fuel switch, filters, and any specific components required for your particular model of Mercedes Diesel
  • Additional plumbing and fittings
  • Tools for installation (wrenches, screwdrivers, etc.)

Step 2: Preparing the Vehicle

Before installing the conversion kit, you will need to prepare your Mercedes Diesel:

  • Drain the existing diesel fuel from the tank
  • Clean the tank thoroughly to remove any residue
  • Ensure that the vehicle's fuel system is free from debris and in good condition

Step 3: Install the Conversion Kit

Once your vehicle is prepared, it's time to install the conversion kit. This step typically involves:

  • Mounting the vegetable oil tank in a suitable location
  • Routing the fuel lines from the tank to the engine compartment
  • Installing the fuel switch and any necessary filters
  • Connecting the fuel lines to the engine

Step 4: Modify the Fuel System

After installing the conversion kit, you will need to modify the vehicle's fuel system to accommodate the use of vegetable oil:

  • Add a heat exchanger or heated fuel lines to ensure the vegetable oil remains at the right viscosity
  • Install a fuel return line to recirculate excess vegetable oil back to the tank
  • Adjust the engine's injection timing to optimize performance with vegetable oil

Step 5: Testing and Troubleshooting

Once the conversion is complete, it's essential to thoroughly test the system and address any issues that may arise:

  • Perform a test drive to ensure the vehicle is running smoothly
  • Monitor fuel system pressure and temperature
  • Check for leaks or any other signs of malfunction
  • Keep track of fuel efficiency and make adjustments if necessary


Congratulations! You've successfully converted your older Mercedes Diesel to run on vegetable oil. By making this eco-friendly and cost-effective switch, you're not only saving money but also reducing your carbon footprint. At Grafco Electric, we're committed to helping individuals and businesses transition to sustainable energy solutions. If you have any questions or need further assistance with your Mercedes Diesel conversion or any other electrical services, don't hesitate to contact our knowledgeable team. Transform your vehicle and contribute to a greener future today!

Maureen O'Brien
Great alternative fuel option! 🌱🚗 This article is exactly what I've been looking for! Converting my old Mercedes Diesel to run on vegetable oil seems like a fantastic way to reduce my carbon footprint and save money on fuel costs. I'm excited to learn more about the process and see if it's feasible for me. Thank you, Grafco Electric, for providing this comprehensive guide! 🙌
Nov 12, 2023
Sonja Dotson
Great alternative fuel option! 🌱🚗
Nov 8, 2023