A new product from German oils, lubricants and additives manufacturer Liqui Moly, the Petrol Engine Intake Decarb aerosol is designed to break down carbon and gum deposits that build up in intake manifolds. Due to gases vented from the crankcase, the build-up of carbon deposits in the intake manifold disrupts airflow and creates uneven air / fuel mixtures. Carbon build up in manifolds and throttle bodies creates hesitation, pinging and robs the engine of power. A quick spray into the throttle body and manifold with the products unique spray nozzle easy breaks down these deposits and restores lost engine power and efficiency.

Suitable for all petrol engines only, by simply removing intake components and spraying the contents into the manifold the product works its magic in 2-3 minutes. It can also be used on intake manifolds, throttle bodies and intake components (excluding air filters) to assist in breaking down these stubborn, gummy patches of carbon. Better yet, the product is safe on all petrol powered carburetted, fuel injected, naturally aspirated, turbocharged and supercharged engines. It also has no effect on sensitive catalytic converter and sensors making it suitable for almost all makes and models.


“I would have to say this product was a little intimidating at first, but once I had read the instructions I knew it wasn’t going to be overly difficult to use. I’ve used Liqui-Moly products before (such as their oil flush and octane booster) and could not be happier, so my expectations on this product were high. The clever hose and nozzle made it very easy to get into the manifold on a Holden VL and spray accordingly, but wasn’t as easy on a Subaru XT as the intercooler pipe needed to be removed. Nonetheless you can tell this product works, after 10 or so minutes on the VL there was a noticeable difference in the way the car idled and throttle response was improved. Even though the Liqui-Moly products aren’t really on the cheaper side of what’s out there, at least you can be guaranteed they work”.

Matt, 25, VIC.