switching back and forth will do harm to the seals and gaskets for the engine.
IMO, synthetic are way overated (unless the manufacturer specified the sysnthetic). Not worth the money to put synthetic in.
its an old myth and i was told by a mechanics
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Syn oil is prone to causing engine leak
-internuts-
♂
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09/14/2009 postreply
11:55:48
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true
-Kaolin007-
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09/14/2009 postreply
13:13:35