Zombie Thread.....ARISE!!
Hey, the 1990 manual page is a cool thing to put in here. I'd say if you have a 1990 car you want to put the 10w-30, or 10w40..Go for it.
I know fer sure my 2004 Honda Owners Manual says use the Honda MTF, but if yer in a pinch, use motor oil, But, Replace the Motor Oil with the Honda Stuff ASAP.
I have been in other Honda specific forums where guys who are veteran mechanics are adamant about using only the Honda MTF oil, it is the only thing I'd ever put in my 04.