Hi Julio,
No man, I just ended up getting a new oil filter and new engine oil, and getting it flushed before the change. I will say this, the engine smoothed out a LOT, it just clearly felt like a lot of GUNK had been cleared through the system, so it definitely drove smoother. But I'm still of the opinion that it's sort of underpowered in the first and second gear. I'd driven a Hyundai before this Fiat, and it certainly delivered lots more acceleration. I'm not complaining too much now, but yes, when I take it for a major service, I plan to ask them to look at this issue. For now though, it's certainly running better.