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Possible, anyone who we build their (bought somewhere else) cargo for, we strip the lowers of the fork and ram them full of Circlon fork grease. Its not as fancy as SRAM butter, super fork seal stuff (green), but the basic forks with a chrome stanchion aren't exactly low friction in the first place. Keeps the moisture away from the sliding bits as long as poss and seems to keep them working longer IME.
Yeah. Willing to bet 95% of the time those noddy forks on cargo bikes are just binding under stress forces and grinding themselves to bits.