Two distinct powertrain upgrades have occurred over the life of the 1992-96 Buick LeSabre. The first was the addition of the 3800 V6 in 1992, which raised both the horsepower and torque of this venerable GM powertrain. While horsepower received just a modest bump (165 to 170), torque jumped from 210 pound-feet at 2000 rpm to 225 pound-feet at 3200 rpm. Throughout the life of the LeSabre, the 3800 V6 has been mated to an electronically controlled four-speed overdrive transmission. In 1995, it began using transmission fluid that doesn't need changing for 100,000 miles under normal driving conditions. With the switch to the 205-horsepower 3800 Series II V6 in 1996, the 100,000-mile change interval also includes the engine coolant and spark plugs. Naturally, with the new Series II V6 engine comes more power. The engine is now rated at 205 horsepower at 5200 rpm and 230 pound-feet of torque at 4000 rpm.