On most head gaskets the block seal will work for the little drip type
leaks.  However the real problem still exists and will need to be addressed.
However the catch is when.  I have seen block seal go for quite a while in
some vehicles.  I have torn down quite a few engines that have had the stuff
used on them.  Does no damage to the engine but if you are looking at an
unknown engine for salvage and rebuild and find the residues in it you now
have to do some testing. I have found the stuff inside of several VW 1.9
engine cases I was salvaging.
jimt

On 6/5/05 11:14 PM, "James Benthall" <Taobythesea@AOL.COM> wrote:

> Hi all,
> Thanks to all that responded.  I changed the oil to 20-50W per  instructions
> and made it to
> Minnesota and back w/o any problems ;-)  I did however notice signs of  the
> dreaded head
> leak up there (small amount of coolant leaking).  Took to a local  mechanic
> where he put in
> some block seal.  Haven't seen a problem since.  Do those fixes  last awhile
> or will it just
> return soon?  Hope it lasts!
> james in houston
> 87 Westy
>
>