Oil Change intervals??

Probably not. Most oils are good for 20-25000 mile oci. If you are wanting to do the most for your engine, try putting on a bypass oil filter or Spinner II to keep the oil cleaner longer. Will be a lot cheaper than changing the oil more. If your UOA's are looking good, then I would just put on a bypass and continue the UOA's to monitor things. Of course, if you are getting oil and filters really dirt cheap, maybe this advice not worth anything.

 

The fresher the oil is the better job it will do. We recommend going every 20,000 KILOMETERS! Not miles! Good oil is cheap insurance! Oil might be, repeat, might be ok still after 15000 miles, but who wants oil in their engine that is only doing 70% of the job! If you don't mind spending some extra $$$ I say go for it!

 

I change every 10,000 reguardless. 1.3 mil & still going.

 

Fresh oil is not cheap insurance.Oil samples are cheap insurance.It gives you information to compare over a period of time to see how your engine is doing.Oil samples and extended drains are working for to many people to say it's crazy,just a good business plan.

 

The question nobody asked and should have is.... What kind of oil was the previous company using? Was it synthetic? That may be why they was going 25000 miles on an oil change. If your running synthetic and changing the oil every 10000 miles your gonna go broke, that stuff isn't cheap!

I go anywhere from 10-15000 miles on my oil, Rotella is what I'm running.

 

852000 miles running a bypass filter and oil changed once a year, always had good results on my oil samples, engine still runs great, mileage is the same as when I bought it,

why change the oil if it doesn't need it, in fact the sampling shows good even after a year but I just change it with my spring maintenance schedule.

sampling is the key.

 

grease at 5&10k change the oil every 10k but I spend a lot of time in the dirt and don't forget to roll the rods & mains at some where around 750k or earlier