Oil Change Once a Year?

[gwp]

I believe when Mobile 1 was introduced it was advertised as 25,000 mile oil. The instructions on the jug was to change the oil filter and add a fresh quart of oil every 5,000 miles. I just changed oil every 10,000 miles. I was able to drive over 200,000 without engine problems on every vehicle using synthetic oil. I still use synthetic oil, but now that I have retired, I change oil every year at a very low mileage. The largest advantage I see with synthetics is preventing wear during cold starts especially on very cold days.

[Major Tom]

I use Mobil 1 and change my oil twice a year, well, the dealer does.

[Clark Howard]

For the last forty years, I have changed my engine oil at 7500 miles. Using quality oil, (not synthetic), and good filters with every change. I usually run an engine at least 225,000 miles before overhaul. No wear problems have been noted on tear-down. All crankshafts have been reused with simple polishing. Your mileage may vary. Regards, Clark

[Roadkingtrax]

Long interval changes have more to do with filtration.

Look into Amsoil synthetic.

depends on mileage and conditions.

[tmark]

I was in Wally World and noticed a stack of Mobile 1 five qt xxxx of super synthetic oil. It is labelled Mobile 1 Annual Protective synthetic 0-20 oil for those who want to extend oil change interval time.

Of course, the fine print said this oil is only to be used with the Mobile 1 special oil filter.

To you professional auto care persons, is there really an oil that can last for one year before changing?