350Z owners and not changing oil

[daemonite]

nope they arent using bypasses, they just leave the oil in...

and yes additives are important hence why you still need to replace your oil.

 

[Audi Junkie]

I just don't see the point in extending OCI beyond other service intervals like air filters and engine services. Beyond 1 year is pointless....6 months is the max in my book.