The boots on my 300D were showing their age. No holes, but rubber had small cracks. If memory serves me, I used 3M 5200 sealant rubbed into the cracks. It is a rubber-like adhesive/sealant and once stuck can't be removed. That was a few years back. I should check the seals out.

Diesel 911. Any EASY way of changing them? Split boots?

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Graham
85 300D,72 350SL, 98 E320, Outback 2.5