Well, my Viper is 10 years old now so I made my second 5 year trip to the dealer to have all the fluids changed. Mobil One in the engine, Amsoil in the transmission, differential and power steering and Valvoline Sythetic in the brakes and clutch. Also flushed and filled up with new Peak permanent antifreeze. Now I bought all the fluids and filters on my own and brought them to my dealer....took the tech about 3-4 hours to change everything over and he's great. I paid $545 for the labor...sound OK or too high? Glad the snow is gone so I can drive my beauty........