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Old 12-04-2019, 08:07 AM   #30
Scooby Newbie
Member#: 498029
Join Date: Feb 2019
Location: Cleveland Ohio
2019 WRX Premium
Pearl Blue


I am sure your concern is about engine wear or issues for idling for too long, not related to laws, nature, etc. Ford has a formula for their heavy duty trucks… 1 hour of idling = 25 miles of normal driving. So If you worry and care about your car, then I would suggest guess how many hours of idling you do and add those extra miles to your oil change cycles.

Example: 20 hours of idling a month (this is a guess estimate including red lights, highway jams, warming up and of course your keeping up warm situation) = 500 miles (again estimated).
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