Do Your Liqui Moly 20L Bottles Leak?

We have issues with our Liqui Moly 20L bottles always leaking. We received 2 racks from Liqui Moly that each hold 6 – 20L bottles. 12 total. Our local Liqui Moly rep said this has been a problem over the years. However he did offer some advice…

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   If you are using the Liqui Moly white foam seals (29130), these are 1 time use only. They still work, but you MUST replace them every time you reuse a old drain cock. According to our Liqui Moly Rep, these are the old version and have been superseded.

   

   These seals have been superseded to the black PVC Viton seals. They still work but you must replace them every time you remove the drain cock assembly.

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2. The prefered “New” seal is the PVC Viton black rubber o-ring seal that the new drain cock kits come with. Part No.: 7924
   

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3. 

   This is a photo we found online of another shop with the same problem. Note, they have 6L bottles to catch the oil, just incase.

   When installing a new seal, do not over tighten the red cap. If you over tighten the cap it will deform the bottle and leak.

   1. Screw on the cap on until it stops.
   2. Give it 1/16 of a turn. Maybe around 5 ftlbs / 7 nm MAX.
      
   3. Rack your bottle and check for leaks about 10-15 minutes later.
   4. If it’s leaking, clean the leak first. Then give it another 1/16 turn and check it again in 10-15 minutes.

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   Furthermore, when installing a new seal, lightly coat the seal with the fluid you are putting the cap on. This will help promote sealing.

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   Remove the security ring before installing. If you do not remove this ring, it will not allow you to tighten it all the way and it will also leak.

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   Make sure the air release has a hole in the bottle.

   1. If your bottle is on a Liqui Moly 20L rack, before draining the fluid for the first time, you must first drain some oil out, then puncture a hole under the cap. If you don’t it will leak from the air release hole.
   2. If you do not put a hole under the air release cap, full bottles may leak on hot days.
   3. Always close the red air drain cap when your done filling. This will create a vacuum if any start to come out and keep the fluid loss to a minimum.

Liqui Moly does not sell the PVC Viton seals separately right now. Our Liqui Moly rep said there is a link to buy the same size seals that Liqui Moly uses in their drain cock kits. There are two options we found. Square and round o-rings. We ordered 60 of the square seals and are betting on those being better. Also, if you buy them in 2 – 4 packs (8), they are $8.90 + tax & shipping. We purchased both to test out. We will post our findings after they arrive.

Click Here for Round O-Rings

Click Here for Square O-Rings – 60 Pack

Click Here for Square O-Rings – 2 Packs of 4 = 8 Total

The post Do your Liqui Moly 20L Bottles Leak? appeared first on Meister Werks • Renton Auto Repair • Renton Auto Service.

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