I've got a non-standard 20" air fork (Mekkem SASO) that could use some maintenance, but there's zero info I can find from either the manufacturer or OEM on oil viscosity, volume, or anything else. I've watched many air fork service videos, so I'm confident I can follow those procedures for disassembly and cleaning since things aren't likely to be very different from a hardware setup standpoint, but after I drain, I'll be stuck trying to figure out how much oil to put back in. It's got 80mm of travel, so I'm wondering if I should just eyeball it (3ml?) of "standard" suspension fluid (5w?) or if there's a standard way to calculate what you need by measuring the volumes of the tubes and going from there.

Given the lack of info on this item, I assume replacement parts will be difficult or impossible to acquire, so I figure I should try to stay ahead of the wear to keep them around as long as possible. They don't get mountain-bike type use, just bad pavement and fairly tame single and doubletrack + gravel.


I can't find a specific source, but in my shop we use a chart from RockShox that can be applied to almost every front suspention. Here is a link

  • 2
    Welcome to Bicycles SE. We prefer answers on this site to be self-contained. That way, the answer is still valid if the link dies. Please use the edit button to summarize the information is contained in the link within the body of your answer. Otherwise, it is likely to be downvoted, flagged for moderator intervention, and possibly deleted. – Swifty Sep 18 '19 at 18:49

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service, privacy policy and cookie policy

Not the answer you're looking for? Browse other questions tagged or ask your own question.