Hello Julie R, The STP diesel treatment goes in the fuel tank when you fill up. It should have the correct amount per tankful on the bottle. Be careful not to use too much as you don`t want to finish up with an over- concentration of treatment in the tank as this can damage non-metal components of the fuel system. Hope this helps. - Andrew

Can i put the diesel cleaner, dpf cleaner and injector cleaner in all at the same time?

Hi. I wouldn’t as the 3 are very similar. Depending of the issue you have use the one design for Fill your car with premium diesel then add the one you really need. I usually leave the car overnight and go for a Motorway drive. About 10 mins will do. You can add the others on a later date.

Would this be more beneficial if used with a regular full tank of diesel or a premium full tank of diesel

I’d only use premium diesel regardless what the car was. Cheaper diesel are the reasons why engines become blocked hence these products being created. I’d virtually empty the tank then put this in then premium then you’ll see the difference Hope this helps Thomas

How much do you put in the fuel tank

200ml treats 50/60 litres of diesel...so half the pack will treat a typical 25 litre diesel refuel.

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Fuel your drive, clean your ride! 🚀

ENGINE WHISPERER - Experience a quieter engine.
COLD START CHAMPION - Boosts cold start performance with Cetane Improver.
UK QUALITY ASSURANCE - Proudly made in the UK for superior quality.
FUEL SYSTEM CLEANLINESS - Say goodbye to deposit build-up!
ECO CONSCIOUS PERFORMANCE - Reduce emissions, smoke, and noise.

The STP Diesel Treatment is a powerful 200 ml concentrated cleaning formula designed to keep your fuel system clean, enhance fuel economy, and improve overall engine performance. Manufactured in the UK, this product effectively prevents deposit build-up, reduces emissions, and noise, while also improving cold start performance. Ideal for the eco-conscious driver looking to maintain their vehicle's efficiency.

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Manufacturer	Armor All
Brand	STP
Model	ST54200EN
Package Dimensions	21.9 x 6.3 x 4 cm; 200 g
Item model number	GST54200EN
Manufacturer part number	GST54200EN
Item Weight	200 g

STP Diesel Treatment 200 ml, Keeps your Fuel System Clean, Enhances Fuel Economy, Mechanical Car Cleaning Products, Concentrated Cleaning Formula, Made in the UK, Black/Blue

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