So is this just an octane booster? There are some buzz words in the description, but chemically what does this do to "increase engine performance"?

High octane increases HP substantially on direct injected turbo boosted engines. Octane rating is a rating for how much the fuel can withstand compression without detonating (knock)-(leads to misfires). There are several benefits to using this product and even a higher octane fuel.

will it clean a fouling plug ?

Modern engines usually maintain a fuel to air ratio on their own - through the computer. A fouling plug can mean several things, some requiring engine maintenance or it just could be you are using regular when you should be using supreme. Before using any additive you need to insure the engine fuel system is working properly, so replace necessary parts like the plugs, injectors and the fuel filter. It helps to have a vehicle fault code reader. Liqui Moly makes a Fuel System Cleaner, that will reduce residue buildup in the cylinders and other gunk that gets into the fuel through poor storage practices. If there are no serious identifiable fuel system problems, run two cans of the Fuel System Cleaner through the vehicle, one each in a full fuel tank. This will improve minor engine roughness. The Liqui Moly Speed Tec is a fuel power/octane enhancer, not a fuel system cleaner, but will increase the miles per gallon performance of your engine and help reduce residue buildup.

Can I add to a full or partially full tank or should I add to empty tank before fill-up? Thanks

Liqui moly says to add to a tank before fueling but it's not crucial, just add it and go, that's how I've always done it and it works fantastic

20234 Speed Tec Gasoline 0 25 L 1 Pack

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Sold byAmazon VietnamDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

⛽ Ignite your ride with precision and power!

UNIVERSAL COMPATIBILITY - Perfectly engineered for all 2- and 4-cycle gasoline engines.
CATALYTIC CONVERTER SAFE - Protect your vehicle’s emissions system without compromise.
FUEL EFFICIENCY MAXIMIZED - Enhance every drop of gasoline for longer, smoother drives.
DIRECT FUEL TANK APPLICATION - Simple, no-fuss additive that fits seamlessly into your routine.
ENGINE SMOOTHNESS GUARANTEED - Experience quieter, more reliable starts and runs every time.

Liqui Moly 20234 Speed Tec Gasoline additive is a premium German-engineered formula designed to optimize fuel performance, improve engine smoothness, and boost acceleration. Compatible with all 2- and 4-cycle gasoline engines, it’s safe for catalytic converters and turbochargers, making it the go-to choice for professionals seeking enhanced driving pleasure and reliability.

Specifications

ASIN	B076ZZTQGK
Assembly Required	No
Best Sellers Rank	#57,567 in Car & Motorbike ( See Top 100 in Car & Motorbike ) #63 in Petrol Additives
Capacity	250 Milliliters
Country of Origin	Germany
Customer Reviews	4.6 4.6 out of 5 stars (26)
Date First Available	19 November 2017
Fuel Type	Petrol
Generic Name	Speed Tec Gasoline
Global Trade Identification Number	04100420202346
Importer	ANAND GROUP INDIA
Item Dimensions LxWxH	16.5 x 5.3 x 5.3 Centimeters
Item Weight	272 g
Item model number	20234
Manufacturer	Liqui Moly
Manufacturer Part Number	20234
Model	Liqui Moly 27
Net Quantity	1 Count
Packer	DISTRIBUTED BY GO RETAILS INDIA
Product Dimensions	16.51 x 5.33 x 5.33 cm; 272 g
Volume	8.45 Fluid Ounces

Reviews

S**H

Instant Acceleration & Throttle Response—Just Add SpeedTec

SpeedTec Petrol does positively impact bike performance. When combined with RON100 petrol, the throttle response is negligible, showing minimal improvement. However, when used with standard petrol, it offers a noticeable advantage—smoother throttle response and quicker acceleration

17.07.2025

E**L

This stuff seems improve idle and general engine smoothness. I don’t think it’s a miracle product but it’s worth trying.

23.11.2024

J**S

Nothing crazy but felt a bit more responsive

26.12.2024

R**R

I don't see much of a difference in performance maybe a tiny bit.

8.09.2023

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