Mechanics

MAZDA 3 ENGINE PROBLEM

2007 Mazda 3

Engine Performance problem
2007 Mazda 3 4 cyl Front Wheel Drive Automatic 28000 miles

I got my oil changed at a local auto repair and they put 5/30 instead of the specified 5/20 weight oil in. I have driven just over a 1000 miles and realized my mileage has gone down. Should I be worried about damage to my engine? Would this cause the drop in mileage?
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Rchase
October 28, 2008.



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