Originally Posted by ScottyB
Originally Posted by tbm5690
On a similar note, any issues with running a thicker oil with VTEC being that it's activated based on pressure? I've got a DI J35, minimal to no fuel dilution issues for me that I'm aware of (the NA units seem to be fine) but I'm also curious about going to a 30 and more wondering if VTEC will be effected.
I run my K20 2010 Si with 0W-40 instead of 5W-30 (its specced here for a 30 but up to a 40 in international markets like Europe and Japan) and there's been no ill effect. If you're unsure, look at what Honda recommends for your engine in markets outside the US - it seems we typically get a thinner recommendation, probably for CAFE or something similar.
And comments about international recommendations have what merit? Because this engine has proven to be a nuisance for Honda in every market. It's been recalled in Europe, China, and North America.