Audi Q7 2014, 85L tank. How much / when to add to tank?

I would wait till you’re down to a quarter tank then add a full can of Purge and not refuel till the light comes on. This way it will not be too diluted in such a large tank and will work more effectively.

Hi, i want ask you i can pure direct into the fuel tank???

Hi, Yes the product can be added direct into the fuel tank. Best when approx 1/4 tank of fuel left. Hope this helps. Jan

My handbook says do not put in fuel additives so im not sure whether to use it??

Lots of manufacturers say that, however we sell lots of additives with no reported problems. The Liqui Moly range does it exactly what it says on the tin.

I have a bmw 520d touring, how best to use this product in this vehicle?

Find the fuel feed line and place it into the bottle of liquid moly. Find the return fuel line and place it in an empty container. Start the car and run it for 20 to 30 mins at 2500 rpmnintil liquid moly bottle is empty..

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Diesel Purge

Product ID: 48156331

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Details

Brand
Liqui Moly
Item form
Liquid
Scent
Unscented
Specific uses for product
Engine
Material feature
Unscented
Item volume
500

🔥eliminates knocking & uneven idling

⚙️500 ml concentrated formula

🛢️cleans injection nozzles & combustion chamber

Description

🔥 Keep your diesel engine running like a dream — no knocks, just smooth power!

SMOOTH OPERATOR - Eliminates engine knocking and ensures whisper-quiet idling
TRUSTED QUALITY - From Liqui Moly GmbH, a leader in automotive care innovation
CONCENTRATED POWER - 500 ml bottle delivers long-lasting engine health benefits
PRECISION ENGINE DETOX - Removes stubborn deposits for peak fuel injection performance
UNIVERSAL DIESEL SOLUTION - Compatible with all diesel engines for preventive and remedial care

Diesel Purge by Liqui Moly is a concentrated 500 ml fuel system cleaner designed to remove deposits from injection nozzles and combustion chambers. It prevents and eliminates engine issues such as knocking and uneven idling, ensuring smoother, quieter diesel engine performance across all diesel models.

Specifications

Manufacturer	Liqui Moly GmbH
Brand	Liqui Moly
Model	4100420018114
Product Dimensions	15 x 6 x 6 cm; 480 g
Item model number	01811
Manufacturer part number	1811
Special Features	Concentrated
Item Weight	480 g

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