Coolant is not corrosive if changed periodically, I don't think
stainless should be necessary.  Can't see that it would hurt.

The one in my GL radiator is not a hex head but a round head with a slot
(like a screw head).  I'd guess that doesn't really matter either.  Hex
head would be easier to turn from the side with a wrench.

Allan
--
1991 Vanagon GL

Old Volks Home <oldvolkshome@GMAIL.COM> writes:

> This is just the "garden variety" 8x12mm threaded bolt with a 13mm
> Hex.  Also sold by VW #s N0102374, N0102375 by other VW related
> outfits, but could probably be gotten at the good ole FLAPS.  Original
> wasn't stainless, but might be a good idea IF you can find it.  Don't
> have a groove cut into mine, but I guess it would help in the
> bleeding.  Hasn't been an issue with me.