EurocarsMazda makes a point why biofuel is a renewable fuel source that reduces pollution. A common biofuel is Biodiesel.

This post covers fuel requirements and restrictions of Mazda diesel engines in relation to biofuel. Your Mazda will operate efficiently on diesel fuel with specification EN590 or the equivalent.

While diesel fuel with 5% or less biofuel concentration can be used and won’t affect engine and fuel system performance, anything more then 5% concentration could be damaging to the engine.

You should take extra care and responsibility to ensure the fuel does not contain more than this amount.

What can happen if I use diesel fuel with more than 5% biofuel?

• Never use fuel other than specification EN590 or the equivalent for your vehicle. Use of petrol or paraffin in diesel engines will result in engine damage
• Never use fuel with a concentration of more than 5% biofuel in your vehicle. Use of such fuel could cause poor engine performance or serious engine damage
• Never add fuel system additives for cleaning engines. These may cause damage to the various components of the fuel system such as injectors and fuel injector pumps

Important points

• In some cases, if a diesel fuel is marked as “biofuel” or “containing biofuel”, this could indicate that it contains more than 5% concentration of biofuel
• Mazda does not recommend such products and owners and drivers of diesel vehicles have the responsibility to ensure any product under consideration for use contains 5% or less biofuel before use.
• Be extra careful when selecting your fuel, as any fuel system and engine related issues arising from using fuel with more than 5% biofuel won’t be covered by your warranty.