Hi Ed.

The standard VW Vanagon block heater does fit on the syncro model as
well. It should be available from any VW dealer - though likely
special order. The Bus Depot also carries them - < $40.

Installation requires only a socket wrench (and some plastic zip ties
to route the wire to the license plate door) and takes about 20
minutes. DIY, or any garage could do it.

The heater is pretty wimpy, but beats not having one at all. I used
mine at Lake Placid two winters ago when temps were well below zero
at night and, while the engine was cold when it started, I didn't
hear the really disturbing "Whoa it's too cold" sounds I usually would
hear after sub-zero nights.

Other generic heaters of the coolant circulating variety could likely
be fitted, but none will include the Vanagon in their application list.
I've heard that people have used them, but proceed at your own risk.
Frost plug type heaters cannot be used, nor can the magnetic type,
since the oil sump is aluminum.

IMHO, the best bet would be to install a remote starter that has the
capability to keep the engine warm by running intermittently all night.
Stereo and electronics stores typically offer these with installation
included - I've seen one locally for < $200 installed - though they
might charge extra for the Vanagon. In addition to performing the
function of a block heater, you'd also get a remote starter which is
a nice convenience. Shops will usually not install these on standard
transmission vehicles, so if you don't have an automatic, you'll
probably be on your own unless you are lucky enough to find a shop
willing to trust you to leave your van out of gear when you park it
for the night.

Doug Fitz-Randolph
Freeport, ME
'90 Syncro