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Itchintogo · (This post was last modified: 04-08-2015 12:02 by Itchintogo.)

My bus would stay up indefinitely on the rear suspension but the steering axle would deflate overnight or some times in an hour or two. I suspected the ride height valve as the possible culprit.

As for MMO it is a petroleum based product and we all know that petroleum degrades rubber. Given your brake diaphragms are made from rubber and you depend on those for stopping it would not be a method of choice for me.

I know it has been done on some rigs, but from a preventative and long term solution perspective, I think it is a cheap rudimentary shortcut, not well thought out, with potentially serious or deadly side effects. Given your compressor can potentially contaminate the system when needing overhaul I would not be introducing any other petroleum based products in an intentional manner.

Look here:http://www.otsi.nsw.gov.au/bus/IR-Woodpark-final.pdf