Lowest price since last year? From previous post: Fuel Doctor Fuel Conditioner is specifically formulated for Diesel, Petrol and Two-stroke fuel systems
Designed to clean gums, varnish and carbon deposits, disburse moisture, kill and disburse microbial material whilst increasing lubricity
Fuel Doctor breaks fuel contaminants into sub-micron particles allowing them to pass safely and harmlessly through the fuel system to combustion
With no detrimental effects to fuel pumps, injectors catalytic converters or particulate filters
Fuel Doctor will stabilise and extend fuel storage life for up to twenty four months for petrol and five years for diesel
[Prime] Fuel Doctor Fuel Conditioner 1 Litre $25.50 Delivered @ Amazon AU

Last edited 08/07/2025 - 08:41 by 1 other user

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Out of stock, spewing. Use this on my NP300. Keeps the injectors nice and quiet and cleans up fuel well.
Edit: in stock here for $35.96
Shows $47 for me on your link.
$33 here and on eBay: https://automotivesuperstore.com.au/castrol-4100450?utm_term…
Any mechanics recommend this for a 2010 Hyundai?
Anyone know if this is any good for an idle car with a risk of fuel separating ?
My anecdote is Its good for Diesels. - One of my CDI Diesels used to totally cut out after about 10 seconds of WOT like if you did a standing start traffic light drag race pulling to 4500rpm in first and second, then nothing, engine stopped.
This usually happens when the ECU detects not enough fuel rail pressure and throws a code, like if you actually run out of fuel, or have an injector or pump issue. You have to re-start the engine and all is well, until next time. Its had been like this for over a year, like clockwork every time you forgot and tried to drag someone off at the lights lol.
After a few tanks with Fuel Doctor added it no longer does this. Nothing else was changed, not even the fuel filter.
So I'm a convert. I add a shot whenever I fill up now. YMMV.
Never need this product. Or similar.
Use U98 in the Yamaha R1 no soot.
Using BP fuel in the car, light grey soot. Others, darker to black soot.
Very good price on these - bought 2 bottles for my cars.
Thanks OP.