Deposits accumulate in intake valves, injectors, ports, fuel injectors, and combustion chambers causing loss of power, rough idle, hesitation, misfire, pinging, knocking, low milage, and hard starting.
After 30,000 miles, transmission fluid begins to show its age as it turns brown in color and oxidizes due to the combination of time and heat. Deposits begin to form around the transmission’s many moving parts, resulting in valves that stick and gears that slip or are sluggish and chatter as they shift.