It's only a matter of washing them gently and AIR drying, but muscling them back into the covers can prove a little challenging. You can also febreze the foam and let them air out for a few days, really improves the interior ambiance. After almost 30 years, maybe new cushion covers are in order?
I'm new here, too, but I've read most people use KILZ or similar paint
on the ensolite, but if you're cleaning just try green clean spray or citrus based which is a good solvent. Mine has gotten loose in a few areas, I was going to reattach with a hot glue gun.
Another newbie question. Has anyone washed the original cushion covers for a 1978 Trillium? Any hints or advice on this. Afraid to put them in the washer in case they fall apart. Also what is best to wash the inside down with? The ensolite (is that the right word?) looks really good shape wise but we would like to clean it up a bit. Thanks for all of the help. We were able to replace the propane hose with previous advice from here.