I'm not sure Steering fluid leak sealer would not work and wondered if anyone had tried it and found the right product. My reason being I had a rear jack repaired and re-installed - EXPENSIVE! Now another is starting to leak at the seal. Motor home manufacturers install Dexron III in jack systems. However, I have been told the better fluid for RV jack systems is Power Steering Fluid. The formula has a number of ingredients to absorb water, anti-rust preventative, and superior lubricant ability. The normal life of jack seals is 10+ years and after that they can be expected to start to fail just like we do because of old age. SO, Steering fluid Leak Sealers might just extend their life another 5 years or so. The sealers work on the rubber seals to swell their size and put new life in the rubber. The hooker is the use of the right sealer. I'm told it should be a sealer that does NOT contain petroleum Distillates because they will swell the rubber initially but then work on eventually destroying the rubber like those products do. Then the seals fail beyond repair later. I am trying now to find the product without the distillates.