Join Date: Jun 2004
Location: Sebastian Florida 32958
I use HP4 in all of my bikes and it has never been anything but good. **I have used Spectro, Motul, Silkolene etc and never found much of a real difference with respect to the difference in cost. I also use the OEM oil filters...I wouldn't have a problem using another filter (such as one made for a car etc. because sometimes they use the same filter) if the pitch and size of the threads were EXACTLY the same. If not, then you run the risk of having the filter blow off under pressure. If the other manufacturers filter is an OEM replacement item then have at it. There should not be any real difference and it may even be better, and possibly cheaper too, than the Honda item.
**I also change my oil every 2-3K so it really never gets dirty.