Opel diesel straight-6 2.5 L X 25 TD engines

Opel diesel straight-6 2.5 L X 25 TD 129 HP at 4500 RPM, 250 N⋅m at 2200 RPM engine

It's an 2498 cc (2.2 UK qt.) internal combustion reciprocating Inline 6 engine. It has bore/stroke ratio of 80 mm × 82.8 mm (3.15 in × 3.26 in). This engine was rated 96 kW (128.74 hp) at 4500 rpm and 250 N⋅m (184.39 lbf⋅ft) of torque at 2200 rpm.