i'm oso lack of power feeling skill when changing engine oil... feel like the same all the time..
which idemitsu was that? the mineral one or semi one? both have the same rating.i've tried Motul Chrono racing 300V on B16A.
Dem light. down side: a bit on the expensive side.
idemitsu 15-40
ok overall performance. cheap too.
idemitsu 15 - 40 on B18C SiR
ok overall performance.
Q8 10 - 40
lemau; loss power feeling after 3000km interval. i guess 10 - 40 from Q8 can't really stand high heat condition for v -tec.
Honda (idemitsu) 15 - 40
ok overall performance.
eneos 10 - 40 (gold color semi - synthetic)
feels a bit light. waiting for the next oil change interval to comment further.