My water temp (or CHT temp for the focus) is dodgy at the best of times as it's had a new sender and still plays up/doesn't read/partially reads and sometimes it works properly and don't want to swap the cluster so will be getting an aftermarket water temp gauge to plumb in as it's just easier and more accurate but also wanted an oil one and don't really want to be spending too much on getting both oil temp and pressure so was wondering what's better to have. Seen mixed opinions on what's better to know but I'll let this carry on and see if we get a majority verdict