Diesel Purge | 500 ml | Diesel additive | SKU: 2005

A little confusing how to use - you're supposed to fill the fuel filter with it, and temporarily disconnect the return fuel line to prevent it from getting sucked into the fuel tank. Not straightforward. But it seemed to help start-up and engine operation.

Good quality cleaner at a competitive price. Other places sell it for more. Got it here for $11.07 tax included. Bought it for my 2002 Jetta TDI (MK4) that set for a long time and had trouble starting. Also had a check engine light with fault code P1246: "needle lift sensor implausible signal", which is on #3 injector. I got a new fuel filter, filled it (that serves as priming of the fuel system, too) with Diesel Purge and installed the filter. The car was running on mostly the Diesel Purge until it was depleted. It did not smoke or struggle when running on Diesel Purge and actually smelled a little like I was running bio diesel or veggie oil. The check engine light went away on it's own and the car starts and runs great. This is a good cleaner/additive, I recommend it. This isn't my first time using it. Used it on an old Merc 240D before with good results. Note that one 500ml bottle barely filled the new Jetta fuel filter. You would need (2) bottles, so you can top off the filter (fuller is better and makes for easier starting after you replace filter) and add some to the tank as well AND have a little extra for later. Good luck!

purported to be the best for diesel, soaked some mercedes gas mechanical injectors in it, not sure if cleaned them. Added rest to 6 gallons premium fuel and drove hard which produced a little smoke momentarily. label doesn't say ok for gas, but doesn't say it isn't. i think it helped

I don't write a lot of reviews, but this product deserves one. You WILL notice a difference after using if your diesel had been neglected for a few thousand miles like my 2014 Passat TDI SEL was. In the 14 Passat it is super simple to use, I just pulled out the old fuel filter, sucked all the old fuel out of the fuel filter canister with a turkey baster, put the new filter in, and before starting the engine I filled the entire canister up with Diesel Purge. When I started it up the engine runs great on the straight diesel purge. There is absolutely no doubt in my "butt dyno" that power has been restored. Better mileage, better acceleration, smoother idle, less diesel knock. I'll definitely be using this every oil change from now on.

Price was 2, 500ml's for about $20 as I recall, first using this. If that happens again, I'll buy several. At $16 for one ... ....... pricey...but I don't use the car as often as pre-COVID quite infrequently actually. Car: 390,000-mile vintage Mercedes 200-Delta. (Zero to 60 in ... oh, time to make a sandwich, have a beverage.) Daily driver. White-ish smoke altho called darker once by 1 observer. The DECREASE in SMOKE is too good to be true ... can't believe it. Haven't measured it (mileage or any other criteria) but sound of clickety clack diesel and smoothness and power sounds and feels better. 'put directly into fuel filter; putting it in with up to 16 gallons in fuel tank seems it'd be a terrific waste; 500 ml uses about 80% of can into that main fuel filter. 1st time, 3-5 months ago, serially used up 500 + 500 in a row ... and noticed clear improvement. This critique is from the 2nd time, using only the circa 400 ml, once. Happy motoring.

It is pretty easy to feed this straight into the injectors/injection pump as is recommended in the w123 300d. There are plenty of good guides online so I won't go over the process here. I ran two bottles of this stuff in my 300d with at least 185,000 miles (odometer wasn't working when purchased). It would smoke at idle and on the highway. The smoke trail in the headlights of other cars was visible and a while in traffic. This didn't turn the car into a rocket (I wasn't expecting that) but it did make the engine more responsive and run much more quietly. The smoke is gone too -mostly. There is still some smoke when I floor it or the transmission downshifts but that is pretty acceptable considering the price and amount of work that went into this. This isn't a replacement for a injector rebuild / replacement but it does seem to help quite a bit. With regular use on new injectors this could probably make stretch out the injector servicing interval.

Product worked amazingly. After researching product directions and applications both Manufacturer and on you tube etc, I tried a new approach. Applying additive directly in fuel filter rather than hose method shown on you tube as my vehicle has been modified for veggie or diesel fuel and has additional filters and heaters and I was not sure of DIY method. After draining the diesel fuel from the primary filter not a new fresh filter so to not saturate with additive and possibly damage filter, I refilled and topped it off to the brim with Liqui Moly and started it up directly after refill. My Proud '1987 Mercedes 300D with 350Kmiles (almost new :) started right up no stall or air gap in fuel system, ran it for 10 mins at various RPM just like normal. Viola, it runs so much better. Liqui Moly fixed the rough idle/cylinder misfire, fixed the slow throttle response, fixed the hard starts Like nothing I have ever seen. I regularly personally maintain all our (5) vehicles and now I will use Liqui Moly at every filter change. Thank you Liqui Moly for a great product.

After 5 years of passing emissions, I failed this year. My 1993 Land Rover Defender 90 has the 200tdi turbo diesel. I ran two cans of this stuff directly through a new fuel filter, and I passed with flying colors on my retest. I had also changed the air filter and got a fresh oil change, so I am not sure this was 100% of the solution, but I don't care. I passed! Now it qualifies for collectors plates. So win!

شكل العبوة مختلف عن كل منتجات ليكوي مولي حيث ان العبوه معدن بدون اي كتابة عليها و عليها ملصق فقط !!! تأتي عبوات ليكوي مولي المعدنيه مطبوعة بأسم و معلومات المنتج كما ان هناك اختلاف واضح في لون العبوة و جودتها. تم مخاطبة البائع ولم يرد حاولت ارجاعه ولكن سياسية امازون لا تقبل الارجاع للمواد القابلة للاشتعال لا انصح بشرائه ابدا

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Va increíble, poco gasoil, 25 kilómetros a 3.000 revoluciones, gasoil bueno... Y no hay ITV que se le resista

Moly siempre una buena producto

Worked very well.