i suggest you back to semi 5w30 or fully 5w40 if you feel the car is sluggish...

as for my myvi... tried eneos 5w30, seriously i would say good enough, worth every penny...
then change to lexus 5w40, nothing to complain about but i feel the car pick up not as light as eneos 5w30, my foreman claimed this lube did mix with some addictive or whatever else... not a 100% pure lubricant...

as for the current one, back to eneos but this time is gold bottle 5w40 fully... to be honest, i will never switch to any oil anymore... this 5w40 simply is the best partner for my 6yrs old myvi... pedal more responsive compare to lexus oil and most importantly, i feel comfortable with the car... cheers !

i do found honda oil now sharing the same manufacturer with eneos oil, probably u can use honda 5w30 oil if you have budget concern? else give a try on eneos 5w40