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0w20 eneos for winter (stored this year) and motul 5w30 summer/track use. Might be just me but I feel it runs much smoother on 5w30 and when I was driving last week I swore I heard like a rattle/knocking sound or something (still on the 0w20 eneos). Might just be hearing things most likely lol I'll see what happens when it warms up a bit and I change the oil.
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