Cummins 400 ISL diesel particulate filter
I am getting a new to me 2007 Itasca Horizon DP with the 8.9 Cummins ISL 400hp engine. The EPA 2007 rules required a diesel particulate filter. Was that a requirement on 2008 model year or 2007 engine...
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My light comes on like once a year on a trip for about 30 to 40 minutes...otherwise, no issues, once in a while I will see the try light but it will go out within a second..no issues running or anything...I do not extend idle for more than 5 minutes.
