followed in 1984. From 1984, wind-up windows were fitted (Series models and very early 110s had sliding panels), and a , diesel engine was introduced. This was based on the earlier engine, but had a more modern fuel-injection system as well as increased capacity. A low compression version of the V8 Range Rover engine improved performance. It was initially available in the 110 with a Range Rover LT95 four-speed transmission with integral transfer case and vacuum operated differential lock, then later in conjunction with a high strength "Santana" five-speed transmission. This period saw Land Rover market the utility Land Rover as a private recreational vehicle. While the basic pick-up, 4x4 and van versions were still working vehicles, the County 4x4s were sold as multi-purpose family vehicles, featuring improved interior trim and more comfortable seats. This change was reflected in Land Rover starting what had long been common practice in the car industry: detail changes and improvements to the County model from year to year in order to attract new buyers and to encourage existing owners to trade in for a new vehicle. These changes included different exterior styling graphics and colour options, and the introduction of new options, such as radio-cassette players, Rostyle wheels, headlamp wash and wipe systems, as well as accessories such as surfboard carriers and bike racks. The switch from leaf spring to coil spring suspension was a key part of the new model's success. It offered improved off-road ability, load capacity, handling and ride comfort. The 127 (and 130) From 1983, Land Rover introduced a third wheelbase to its utility line-up, a wheelbase vehicle designed to accommodate larger, heavier loads than the 110. Called the "Land Rover 127", it was designed specifically with use by utility companies in mind, as well as military usage. In its standard form, it is a four-door six-seater consisting of the front half of a 110 4x4, and the rear of a 110 high-capacity pick up (HCPU). Logic was that this allowed a workcrew and their equipment to be carried in one vehicle at the same time. The 127 could carry up to a payload, compared to the payload of the 110 and the of the 90. Land Rover 127s were built on a special production line, and all started life as 110 4x4 chassis (the model was initially marketed as the 110 crew cab, before the more logical 127 name