For one of my mowers that has a yanmar 20hp twin engine I have been trying to find cheaper oil filters. It came from the factory stock with a Tokyo Roki filter with a # of LFS706. I cross referenced it at Napa auto parts online to a Napa #1359.....when I got to napa the guy gave me a Napa #1358 filter. Does that make much of a difference if its one digit off? Also this Tokyo Roki filter had 2 #'s on it LFS706 and another # I ran both #'s on Napa auto parts store online and both came up with difference oil filters. What do you guys think? I have thrown out the old filter and im not able to get the 2 filter #'s through the dealer or anyone else so im kinda on my own on this one any thoughts?