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I thought is was 5w30. Oh well.

My question - is there a benefit in using synthetic or a blend? I used synthetic in my P5, and it was nice and clean. But I've never used a 5w before..... I don't know if it would make a difference. Also the Synth let me go 5000 miles without worry, I'd of worried about going over 3500 with regular, even if the manual says otherwise.
 
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