I just got a used 2002 Corolla for my daughter. 40K and clean. Not knowing the oil change history, I put in some Auto Rx when I changed the oil/filter. The variable valve timing mechanism uses oil pressure to operate, and it has a small filter in the oil supply to the actuator. I read that most problems with the system are caused by this filter getting plugged.
Should I monitor this during my cleaning and rinse stages with the Auto Rx? Any others have problems??
Should I monitor this during my cleaning and rinse stages with the Auto Rx? Any others have problems??