Fuel Injector Cleaners and Polyether-amine

by Andy Published on Friday, September 2nd, 2022

In 2007, I revealed to the public the importance of PEA (polyether-amine) chemistry in fuel system cleaning. As a result of this revelation, polyether-amine is now a hot topic of discussion on most automotive websites. Nobody had even heard of it then, and now everyone is an “expert.”

Polyether-amine is critical for rapid fuel system cleaning and carbon removal from the combustion chamber and valves. Cleaning is fast, with improvements in vehicle running evident in just a few miles, particularly if the fuel injectors suffered from deposit build-up.

In fairness, the lower-cost treatments do a reasonable job cleaning old petrol or diesel injectors as any solvent-based cleaner. However, they fall short with modern high-pressure fuel systems, carbon removal, and removing deposits from the combustion and post-combustion areas. Unfortunately, high-quality polyether-amine (PEA) is considerably more expensive than polybutene-amine (PBA).

The introduction of gasoline direct injection (GDI) and generally higher pressure fuel systems on gasoline and diesel engines meant more development was needed. Products such as Oilsyn Petrol Doctor contains three detergent packs that work in synergy. They handle port injection, GDI, and carbon removal needs with the assistance of polyether-amine. This is also driven by changes to engine oils and how the lower viscosity oil vapor finds its way into the engine via the EGR system and other mechanisms. This results in a varying composition of deposit formation that requires a different cleaning approach.

When purchasing a fuel cleaner or conditioner, ensure it contains multiple detergent functions that address the different types of deposits and fuel systems.

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4 thoughts on “Fuel Injector Cleaners and Polyether-amine”

Seyit says:

January 29, 2025 at 8:30 am

Hello I misfueled my car (ford fiesta 2012 1.25 zetec petrol) with unleaded diesel. When i started to feel misfiring and noise, i staight up went to mechanic. They leaked the diesel out of the system and they changed the fuel filter. after finishing letf over petrol, i fulled the tank with E5. The problem is that it is still misfiring at ramps and low RPMs and fuel economy has worsened down. I dont really want to change the injectors and spark plugs.

I am trying to find a good additive. If i use PEA added product, will it solve the sticky diesel remnants?

Your answer is much appreciated.

Reply
1. Andy says:
  
  January 29, 2025 at 1:44 pm
  
  I recommend Oilsyn Petrol Dr to clean the system through.
  
  Reply
Fernando Gomez says:

January 5, 2024 at 6:05 pm

Hello. With the Honda Civic 1.7 diesel and 185,000 km, what would you recommend? Use the AR6900-D MAX in another identical car, just a small bottle. It was a short time but I think it went well.
Now for this car, what advice do I have to make it last and run clean and well?
Thank you.

Reply
1. Andy says:
  
  February 10, 2024 at 2:59 pm
  
  Try Oilsyn Diesel Power DNA as a comparison.
  
  Reply

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