Merbau Deck Maintenance

[Rolytav]

Hi, 

I usually oil my Merbau deck about every 18 months using the Cabot's aquadeck. Last time I did it,I noticed there was some decent wear in a few parts and just oiling over it didn't look that good.  What do i need to do to bring it back to a more universal finish all over? Is it a matter of restaining and then oiling over that? 

I've attached some pictures of wear..