Well I was concerned over it because the one I just received back from CIS Flow Tech -- the plunger moves freely, but I did notice that the whole unit had a film of grease, I was just wondering if this is the grease that is used to keep it moving freely when not under pressure.

I'll be able to test my rebuilt one in about a month, so I'll report back soon. I'm excited to test it out, but gotta move out of where I am living first.

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2016 Monsoon Gray Audi Allroad - 21k
2008 Black Mercedes E350 4Matic Sport - 131k
2014 Jeep Wranger Unlimited Sahara - 62k
2003 Gray Mercedes ML350 - 122k