Ok guys, this is the e-mail I sent to a fellow service advisor I work with, she's at our Honda store(different town) and I'm at our KIA store. Her husband is a master certified Honda tech current going to school for a degree in mechanical engineering hoping to get a job at Honda. He is what I would call a Honda guru. Take it for what it's worth.
Hey, thanks for the note, btw. Since you left me your email addy I thought I'd ask you/your husband a question. Why does Honda recommend the oil filter be left in place for two oil changes? Is it there way of saying the cost of ownership is less on a Honda, or have they determined some mechanical advantage with running the filter twice?
Thx!
Dan said Honda recommends every other because replacing the filter introduces a small amount of particles into the oil system every time you change it and the filter doesn’t NEED to be replaced every time. And we also do not use aftermarket filters anymore, we did for a short period of time I guess but we use Honda ones now.