Use Chevron Techron Fuel system treatment every 3000-4000 miles with any Top Tier High Octane Fuel and drive for 1-2 hours on HWY mostly and 60-80! AMSOIL PI , Lucas Fuel Treatments and others are also good, add to gas and drive and go,thats it will take an Hr to notice,just carbon and dirty injectors, do this every 3-4 months and should never happen again!