I just tossed in PP Euro 5w-40 last week. I have one track day done and another planned for this weekend. I am at 3k miles now so may change at 5k after these track days.
On a side note, I did notice after the change to the 5w-40 that the car's idle is a little more pronounced as far as feeling the car shake a bit more. Not sure if its coincidence or me just being paranoid. Any of you notice that after the switch? Feels almost like how a V8 would feel and not sure that is whats in line with most people say on how smooth these engines are.
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