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I was looking in the manual for when to change them and i couldnt find it but i remember reading a post on here about changing them at 15000 miles, any help?
Fords Scheduled Maintenance Guide says 30,000 miles but gives no time limit. The Haynes Repair Manual says 30,000 miles or 24 months. I think 12-15,000 miles or 1 year is better.