Liqui Moly 2331 Leichtlauf High Tech 5W-40 Engine Oil - 1 Liter

I’ve used this exact oil in a highly tuned Audi RS3 for 5+ years. It performs flawlessly in keeping the engine running smoothly. No leaks, no overheating, no problems with the turbo. I use it in combination with LiquiMoly Ceratec. As the name says, this oil is an extreme long-life oil and can extend oil changes for up to 40k km. While I would never drive this many miles between changes, I have on occasion gone 2 years between changes as my tuned car is driven infrequently. Even after 2 years, this oil came out of the engine looking like brand new oil. The color was still clear, viscosity was excellent, no sludge or separating. And this car is stored in a hot humid garage in Florida. I’d buy this oil at any cost.

Great performance in the PNW weather. I only run Liqui Moly in all my Audis. Will continue to use it. Amazon has it cheaper than anyone else I've seen. Never damaged in shipping either.

I got this for my kia stinger with the 3.3 v6 engine that is tuned with bolt ons. I could immediately tell how much quieter the engine chatter got after I started using this great quality oil. Engine runs bit smoother as well. Definitely will offer great protection in the long run and honestly for the money it's pretty good value. I always buy two and have some left for next time. Not going to use anything else.

I've been using this oil for a while now since switching from Mobil 1 and I can't say enough good things about it. Mobil 1 is a great oil and frankly more readily available than this stuff and oh cheaper to-boot. But for my "baby" nothing is too good. I have to say that I am pleasantly surprised at how well Liqui Moly holds up after 6k miles. Still golden color and minimal burn off / oil loss. Maybe it's psychological but it feels like my engine runs happier, smoother and quieter with this product. During my most recent oil change I also used Liqui Moly ProLine Engine Flush before draining the old oil and it was amazing to see the amount of sludge / deposits that were in the system even though I religiously change my oil every 5-6k miles though product is rated for 10k+ change intervals. I also added Liqui Moly Createc friction reducer to the new oil. Jury is still out as to the effect it will have but if my experience with the other products is any indicator I should be pleased with the results. Now, I did my research before using these products and everyone out there has an opinion on everything from "don't believe the hype" to aspiring chemists who give you their take on the class / chemical make up of the base and product. You'll go nuts reading and making sense of it all so my recommendation is go with your gut and choose the product that YOU feel works best...especially for your wallet. You can't go wrong with Liqui Moly, Mobil 1 or any of the other FULL SYNTHETIC oils. I did read however that in the US, oil manufacturers can call their product full synthetic is it has synthetic components whereas the products that originate from Europe / Germany must be 100% synthetic in order to carry the label. Makes me even happier to be using Liqui Moly manufactured in Germany. There are Liqui Moly products made in the USA so make sure the bottle says Made in Germany to be sure you are getting a Full Synthetic product. Please note: If you car is under manufacturer warranty though technically it cannot void the warranty even if dealer says otherwise, as a matter of personal preference I would only use the oil and not the additives like the flush or friction reducer. No sense getting into a war of words with the dealer/manufacturer. Since my car is a 2002 the only person I have to negotiate with is myself.

I have a 10-year-old BMW X5. I switched to Liqui Moly a few years ago, upon switching to a new mechanic who focuses solely on German autos. And since then, I have been using nothing but Liqui Moly for oil change. It's just the best! Getting great fuel efficiency (20+ mpg for a car that used to give me ~17-18) and great power from a 10-year-old motor; need to change only once a year. And I carry a 1-liter container in my trunk just in case I need to top up.

Hands-down, the best way. I use this in turbo charge vehicles whenever available. I am an automotive professional and swear by this stuff my engines stay clean, but I’ve had to look inside. It is not the least expensive but it’s much cheaper than replacing engine parts. That’s my honest opinion.

I only use this on my Audi. Best oil out there for German brands. It will keep you engine clean and running smoothly.

It’s good stuff. I used it in my Mercedes and now my Jeep with the 2.0 turbo and have had no issues. My Mercedes would burn about a quart between oil changes and was very noisy but after changing with this it wouldn’t lose oil and wouldn’t get noisy until it was ready for a change.