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Old 10-04-2012, 11:20 AM
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55 55 is offline
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Location: CANADA
Join Date: Apr 2006
Posts: 605
Mein Auto: 2015 Mazda 3 Sport GT 6MT
Synthetic or not things get old. After one year the oil must have lost some qualities just because of the age. It is like tires are to be replaced after 5-6 years even if the mileage is low. Any fluid has an expiratin date. I think it makes sense that they want to do it.
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