12-24-2023, 09:22 PM
Hi pdedse, the strange "grey matter" you found is simple sludge - not a grease meant to be there. At least color, origin and amount, together mileage and location points this way. Sludge is created by squeezing oil and water through small spaces, over and over and over again. And unfortunately it does neither preserve the desirably properties of either water or oil. Very good that you got it out. It means probably that some water got past the outer seal.
