I 've never heard of this. I figured i could have pierced the boot and injected some grease but then there is a hole that water dirt and salt can get into. I don't get how a zirk fitting can just rest in the rubber. If I were to try and put more grease in at a later time wouldn't it just push the fitting into the boot and then I would definitely have a whole in the boot. How does the fitting stay attached to the boot?

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John


1998 C230 for the wife
1986 Porsche 944 Turbo for me in the summer
1993 Audi 90 for me in the winter