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- 2008.5 Mazdaspeed 3
My car is due for the 30,000 service and I am debating whether to bring it to a shop or do it myself. Mazda wants $167 for the whole shebang, but I have changed the spark plugs myself. I could probably do it myself and save some money but I figure shops have the proper equipment to do a cleaner flush...what do you think?