My range is over 25 years old. It was there when we moved into our house 20 years ago and the previous owner had used it for several years prior to that. The past few years have been very challenging utilizing my "ghetto oven" as my kids lovingly call it. I have to constantly monitor the oven temperature when ever I make a meal. Nevertheless, I have had many successful dinners, including holiday dinners with "old yeller" (which is what I call her since she is old and yellow-gold).
Monitoring my oven temp is kind of like monitoring my "recovery temp". There are days that I have to keep "checking" , reminding myself that it's one day at a time and things will not happen as quickly as I want them to or think they should. Sometimes its an all day process ( like when I'm doing a holiday meal in my oven). I have to check and re-check the entire time. Sometimes it's not so much and I look at the thermometer and low and behold, it's holding steady right where I want it to be!
One of these years, I will get a new oven and no checking up may be required. I think that perhaps I will still do it though. My recovery is like that too. I may one day think I am finally new and improved but it won't hurt to check myself from time to time!