Oil Additive | 300 ml | Oil additive | SKU: 2591

I’ve been using LIQUI MOLY Oil Additive 300 ml in my car tuning and workshop business for months now, and it’s genuinely impressive. I’ve tested it on a wide variety of engines — from everyday vehicles to high-performance tuning projects — and it consistently delivers excellent results. The additive improves engine smoothness, reduces friction, and helps keep even older engines running efficiently. I’ve noticed quieter operation and more responsive performance after use, which gives me confidence when returning tuned or serviced vehicles to my customers. I’ve tried other oil additives before, but none match the quality, reliability, and consistency of LIQUI MOLY. It’s perfect for professional use, and the 300 ml size is ideal for treating multiple engines without waste. For anyone running a tuning, repair, or automotive workshop, this additive is a must-have. It’s a small investment for real improvements in engine performance and longevity. Highly recommend!

Realy good stuff,made my engine produce less noise,good product

My 85000mile Astra CUTIE 1.6 was in need of some tender Loving Care so bought this amazing product. In years gone by I used a similar treatment called Molyslip back in the 60s&70s. This modern treatment is exactly the same under a different brand name. Make sure you SHAKE THE CAN WELL for at least five minutes. I carried it round in my pocket for a morning. This allows The molydisulphide compounds to agitate adequately and mix with the additive prior to adding to your engine. Took the car for 10mile run to get a nice hot engine prior to adding the treatment then ran the car fast for further 10miles to ensure completion mixing of contents. Within 15min of adding the engine sound changed and knock disappeared. Rested the car overnight after returning from run. Start up the following morning was as smooth as silk. No rattling lovely even tick over. Ah Bliss. Wouldn't hesitate to recommend this product. The Astra performance was transformed. Fabulous acceleration through the auto box. Overall a very happy car.😁😁

Worked well

This is truly brilliant additive for almost all engine oil additives. It almost stops wear within the engine. I have used this molibdium sulfide in all my cars for the last 50 years & I run my vehicles hard & long. I do not wait for the engine to warm in any weather, I just go out get in, start & drive. Because Liqui Moly protects the engine bearings, sleeves & all moving parts, from the onset. Also you can buy a Gearbox, rear axle (final Drive) & some cars Turret Top oil additive too. But always check as some gearboxes require thicker oils . But if you can use Liqui Molly you be a fool not to. Old classics & vintage cars too. Please note, Any Engine Oil company will never agree to using an additive, or they be liable for selling an inferior oil.

Very good product and price

To the person flapping about the colour of the oil being “black” slight exaggeration….. yes it does change the colour of the natural gold ish hue of the oil AS IT IS AN ADDITIVE and given natural oil is BLACK they perhaps may like to have a think on how their oil is sold to them as a gold ish colour….. perhaps look into oils……., sorry I’ve worked on cars for 30yrs now, and given I’ve worked for Bentley and BMW main dealers I think I know what is correct over flapping regarding nothing other than colour….🤷🏼‍♂️🤦🏼‍♂️ and this stuff is truly awesome, and strangely I don’t mind it changing the colour of my oil as its properties and chemicals reduce the internal wear of my engine and proven via oil sample tests I do every service on my own cars due to its use on track now and then and the very high temps the oil gets to. Seriously cannot recommend this product high enough, and strangely I don’t care it changes the colour of my oil, and perhaps the other reviewer did NOT FOLLOW the correct usage of how much per ML of engine oil to how many ML’s of additive to use I’d suspect is the problem…. IT DOES WHAT IT SAYS ON THE TIN AND THEN SOME to keep MY ENGINE in top condition! Hey I’ve had customers fill the entire engine with oil to hydraulic point sadly, so I know sadly people don’t follow simple instructions… I will follow this review up with pictures of the actual colour of a freshly built engine with this product used in on the dipstick, so people know what it should look like if drained and then this additive is used in the correct quantity for any engine it is safe in, read safety and all manufacturers instructions and guidelines…

engine was definitely smoother in my 1.7 cdti vauxhall combo van 08