I know I've seen old discussions regarding this but I'm not sure it's ever been executed. I have a 2006 Prius that's about to roll over 240k miles within the next month. This car is basically completed depreciated out, the paint is burnt off, and the undercarriage/body has a fair amount of rust. However, mechanically the runs like a top.
At the upcoming oil change (240k mark) I'm going to put in 4 Quarts of Mobil Delvac 1 5w40 and a Supertech Filter, which is what this vehicle has been using for some time. From that point on I'm going to change the filter every 10k miles and top-off with Mobil Delvac 1 as needed (Generally I burn a quart every 5k miles).
I will update this thread as the experiment progresses, I really have no idea how long the old girl will hold out. I will drive this vehicle until death at which point I'll replace the car. The wife hates my old beater Prius that just wont die, so she has endorsed this plan. I'm confident I can get at least 100k more miles out of her, feel free to throw down prognostications.
At the upcoming oil change (240k mark) I'm going to put in 4 Quarts of Mobil Delvac 1 5w40 and a Supertech Filter, which is what this vehicle has been using for some time. From that point on I'm going to change the filter every 10k miles and top-off with Mobil Delvac 1 as needed (Generally I burn a quart every 5k miles).
I will update this thread as the experiment progresses, I really have no idea how long the old girl will hold out. I will drive this vehicle until death at which point I'll replace the car. The wife hates my old beater Prius that just wont die, so she has endorsed this plan. I'm confident I can get at least 100k more miles out of her, feel free to throw down prognostications.