Gents,
in VW TRENDS issue number 7 Volume 22, July 2003 on page 70.

Is an article about the use of synthetic oils in air cooled VW.  By using a
infrared gun they measure the temp at various location on the engine, bay
and accessories.

The inescapable data indicates that in deed the synt. runs cooler, much
cooler in places.

FYI, I am from the carb and points ingnition old school, I use 20-50
Pennzoil in all my cars, but it makes you wander.

Regards, Andrea