If you don't feel anything, I would not replace them.
But if you noticed mileage drop, skipping, hesitation and related performance issue. Change them. But don't through out the old ones. Three of them are still good and can be used to diagnose future problems.
所有跟帖:
• 回复:If you don't feel anything, I would not replace them. -Accord93- ♂ (44 bytes) () 07/24/2008 postreply 19:54:08