One of the things I lurve about my Wotans is the seals.
They don’t let the cack in but they do let a small amount of oil out as they cycle. Trouble is the reservoir of oil does eventually run out.
I do a basic service about every 6 months – take the lowers off – clean everything with a rag and adding about 20mm of 20wt oil to each leg. Keeps everything smooth and supple. It takes about half an hour and you only have to remove the brake caliper – keep the forks on the bike.
Got Wotans on both my bikes ‘cos they’re awesome forks.
When you take the lowers off you’ll see how well made they are.