Following the Type 2 T2, the Type 2 T3 initially featured air-cooled engines; later models had water-cooled engines. Versions produced in South Africa from 1990 until 2002 featured an Audi five-cylinder engine.Volkswagen marketed the Westfalia camper variant throughout the T3 production, with features including a raised roof (either pop-up or fixed), refrigerator, sink, and stove.Examples built between 1979 and 1985 featured round headlights and basic steel or chrome-plated steel bumpers with plastic end-caps. Air-cooled models (1979 to mid-1983) lack the lower grill above the radiator of the water-cooled models, except on models with factory air conditioning. Production of the Syncro four-wheel drive model began in late 1984, with the world premiere taking place at the Brussels Commercial Vehicle Show in January 1985.[3] The original Syncros came equipped with the gasoline 1.9 with 78 PS (57 kW) and a "4+G" gearbox, with the G being a low gear for offroad use (Gelände in German).[3]1986 model year models received revisions including a rev counter, more fabric choices, redesigned air conditioning, enlarged water-cooled engine with a more advanced engine management system, and redesigned transmissions. Exterior changes included rectangular headlights (on selected models), and different paint options. Alloy wheels, larger and squarer fiberglass bumpers with trim along the rocker panels were optional (standard on Hannover and Wolfsburg Edition vans). For 1990 and 1991 model years, a "Carat" trim level was available which included all available options except the Westfalia conversion and Syncro.Some 1979 through 1981 models received 6 welded-in metal slats covering the engine ventilation passages behind the rear windows. All later models had black plastic 16-slat covers that slotted in at the top and screwed down at the bottom.During the 1980s, the U.S. Army and Air Force in Germany used T3s as administrative (non-tactical) vehicles. In military use, the vehicle's nomenclature was "Light Truck, Commercial".Porsche created a version called B32 in a limited edition. The van, based on the luxurious Carat model, was equipped with the 231 PS (170 kW) 3.2 liter Carrera engine and was originally developed to support Porsche's testing activities in Algeria. Ten of these were built, with some sold by Porsche to special customers. Porsche themselves also used the Porsche-engined bus to transport staff rapidly.[4] Top speed was around 135 mph (217 km/h), although Porsche only claimed 116 mph (187 km/h) to ensure that the numbers could be replicated with nine people in the car and with the air conditioning on full.[4]There was one more six-cylinder engine, used in the VW Oettinger WBX6. The development of the engine was originally contracted to Oettinger by Volkswagen; it was derived from the regular Wasserboxer and meant for projected use in the T3. When VW abandoned the project, Oettinger bought the rights to the design and put it on the market. As such the six-cylinder shares many parts with the four-cylinder Wasserboxer.[5] The WBX6 was originally only available with a three-speed automatic transmission, incorporating many Audi 100 parts to accommodate the higher power and torque.[6]