On Dec 14, 2013, at 11:36 AM, Eric Caron <ecaron1@COMCAST.NET> wrote:

Your thoughts on gas are greatly appreciated.

When you ask a question like this, that directly relates to the exact type of engine in your van,
which was produced in a model year that went from aircooled to water cooled, you may want to provide
info that helps the respondents focus on your issue.

I don't see an engine listed below, that would benefit from high octane fuel, which normally means the
engine is a high compression (9:1 or greater), performance motor. Sounds like a complete waste of $$$, but then
what do I know. Doesn't your fuel filler have a decal posted that states recommended octane for your vehicle?
No owners manual?
http://www.westfaliat3.info/html/westfalia_t3_downloads.html

Water-cooled (1983 onwards)
        � 1.9 litre engines:
                � 1.9 L (1,913 cc) (83 bhp) (Serial # DH) water-cooled (or "Wasserboxer") engine used for the 1983� to 1985 models, which used a fuel injection system known as "Digijet" (Digital Jet-tronic)
                � 1.9 L (1,913 cc) (59 bhp) (Serial # DF) 8.6:1 compression ratio, 34-PICT carburetor
                � 1.9 L (1,913 cc) (76 bhp) (Serial # DG) 8.6:1 compression ratio, 2E3 or 2E4 carburetor
                � 1.9 L (1,913 cc) (55 bhp) (Serial # EY) 7.5:1 compression ratio, 34-PICT carburetor
                � 1.9 L (1,913 cc) (89 bhp) (Serial # GW) 8.6:1 compression ratio, Bosch Digijet electronic fuel injection

Bob