To receive help by phone or by email, fill out the Diesel Hotline Assistance Form or contact us at 1-866-6Diesel
- Staff are available to answer questions in English, Spanish or Punjabi.
- Calls are answered between 8:00 a.m. and 5:00 p.m, Monday through Friday; you can leave a voicemail after business hours.
- Calls and emails are answered in the order they are received. Wait and response times are longest near compliance and reporting deadlines, so contact us early!