"Greenamyer, William L" wrote:
>
> Something funny happened on the way to work this morning.  I put Marvel
> Mystery Oil in the Vanagon two weeks ago and have not driven it much since.
> Finally got around to driving it to work and for the first time ever, it
> gave the oil flicker at idle.  Didn't keep doing it but still put a scare in
> me.  I put a couple ounces in the oil.  Is it characteristic that this can
> occur due to the thinning of the oil?  Nothing else has changed from what I
> have been using for quite a while now.  Oil and filters are the same.  Just
> added maybe 3-4 ounces of Marvel.
>
> William

Besides thinning the oil (which that small amount should not have
greatly) you should consider the effects of the 'soap factor' brought
upon by the MM Oil, re: more penetrant properties, also the cleaning
effect- maybe less gunk and more space for oil to loose pressure.

Change the oil and see what happens.

TBerk