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

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!

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.

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.

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 use Stanadyne with every fill up in my 2005 Jetta TDI, but I put this in my fuel filter housing when I changed the filter. It may have made a difference, but I'm not sure. Couldn't hurt.

This stuff works wonders! I add this directly to my 06 e320 CDI fuel filter each fuel filter change, after you prime and start the vehicle you can smell it in the exhaust doing its thing and cleaning. Pair this with liqui moly fuel additive and you will Honestly feel the engine run better. Diesel fuel In the United States prior to 2006 had 5,000 ppm (parts per million) of sulfur, now it has 15 ppm on average! Sulfur acted like a lead did in gasoline, basically a lubricant. Adding additives like this into your diesel is crucial for the fuel system!

Diesel Purge by Lubri-Moly is a go-to injection pump and injector cleaner for any Diesel engine. What I have been doing lately is putting a can in the tank and driving it every so often but for a deep clean I remove the fuel lines from the fuel filter and run them both into a CLEAN container with a whole can of this in it. Run the engine until it's almost used up, it will circulate almost pure Diesel purge through the pump and injectors and back into the container. This is a heavy clean and should get your pump and injectors back to smooth operation. Put whatever is left in the tank. Happy motoring!

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!