We're collecting information about DPFs and interested to know your experience. We're developing some programs to help and want to hear from you. Have you had DPF issues that have forced you to stop driving? Have you had a truck with too many regens? How have you managed these situations? Did you go to an OEM shop, an independent shop or to a DPF cleaning company. Did the company you are driving for direct you? Did you clean, replace with an aftermarket product, remanufactured or OEM part? Has your DPF experience been improving with more experience? Do you drive a newer or older rig? Thank you in advance.