I've been plagued with a noisy lifter for the last week or so. (though
I drive the westy infrequently)  So today I tracked down some MMO  (
it's a rare commodity in Canada) recalling it being touted as the cure
for such an affliction. Well I bought it and the clatter stopped almost
immediately even though I didn't put any MMO into the crankcase.

So, please refresh my memory... what do I do with the MMO re valve
clatter or other Vanagon ills??

TIA
Don