Quote:
Originally Posted by Angelus359
My trans fluid is a bit dirty, but not horribly. Would synth be much better there?
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I'd say drain it (or also drop the pan and check the filter) and change the fluid. (You won't get all the fluid out but if you change the fluid once or twice a year it will improve its condition - like doing a transfusion.) Tranny fluid that becomes deteriorated can cause transmission failure. There is no real advantage to synthetic fluid - ordinary (but clean) fluid will do fine. All the Aveos use Dexron III fluid, which is inexpensive.