Mobil 1 extended service 15000 miles?

[David in NC]

Mobil 1 is advertising 15000 miles between changes for their extended performance oil. Do any of you go that long? That just seems long to me.

 

[briwayjones]

Running a good Synthetic oil and a high quality oil filter you can easily go that long. In fact you can go that long in many cases with Mobil 1s regular oil, that's what I use. You can go as far as 25,000 miles on synthetic oil with 1 filter change in the middle. But when doing extended oil changes like that you need to have your oil tested to make sure it is holding up for that long. Search Aldives 30MPG thread, there's more info. in there.

 

[techieman33]

I had just about gotten to the 15,000 mile point on my explorer when the tranny died. But didn't have any problems that I know of, just changed the filter every 5,000 and added an extra quart to make up for the loss from the filter.

 

[Papa]

I have been using the 5 K for filters and 20 K for the Mobil 1 for years. The even advertised it as a 20 K oil. My daughter even tried to cook one of my engines shortly after she got her drivers license and the oil helped save the engine.
Woodword Governors shows a much extended service interval for their equipment with Mobile 1 and improved operational performance as well over a much wider temperature range.

 

[302Xplorer]

A 15k OCI is very doable. Just make sure you do a couple of UOAs to make sure everything is okay during the run.