turbo188The G188 is, I think, is Cases gaso engine. The D188 is the diesel version of the same thing. They were used extensively in Case backhoes and in the small dozersThe 2.0 TDI engine belongs to the EA188 family. This engine is the redeveloped 1.9-liter TDI engine. The 2.0-liter TDI was the first Volkswagen diesel engine with four valves per cylinder