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Old 06-07-2003, 09:38 AM   #11
GTJules99
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Join Date: Jan 2002
Location: Daytona Beach, Florida
Posts: 24
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We replaced my 99 plugs last night. It took about 45 mins to do and wasn't very difficult. The mileage on the car was 80,300 or something like that. I would suggest changing it before 80,000 because some of the plugs were rounded and had way too much gap. I think the suggestion is every 30,000.

Jules
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1999 Mustang GT - Anniversary, Limited Edition - Silver
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