Oil changes- Every 25 or 50 hours

[Texasmooneypilot]

I have a 2007 Ovation 3 and since ownership, have performed oil changes every 25 hours.  Some say, that is best, others say that since my engine has an oil filter, I can go 50 hours between changes.   Any comments? 

[Piloto]

There is no real advantage of changing the oil more often than 50 hours. Changing it every 25 hours cost you twice and wears the cowling fasteners.

José 

[danb35]

Lycoming recommends 50 hours or 4 months, whichever comes first, for engines with a filter; I believe Continental is the same.  Do your oil analysis results indicate a need to change more frequently?

[docket]

I change every 25 hours or so.  In my old barron, where you could see the engine more easily I went longer.  I like shorter period just because you can see the engine.

[N513ZM]

I do every 25hrs on my 2000 Ovation2

[Shadrach]

Not really that militant about it I plan to shoot for 45-55hrs on the newly IRAN'd ... If it goes over a few hours, no big deal.

[The-sky-captain]

I change my oil every 25-30 hours which works out to about every two months. This includes cutting the filter and checking the suction screen as well, per a Mike Busch article I read. The first time around with the screen was a PITB but now that I have done it a few times it's not so bad. All in all from start to finish the oil change takes about 2 hours of working time. The New Pig funnel works wonders for keeping the mess down on all three applications.

[jetdriven]

every 50 hours per the manufacturers recommendations. Our LOP oil analysis is cleaner at 55 hours than the average 32 hour sample, and we also did an acid test to be sure.  It was fine.   

 

The old engines without a filter, just a screen were 25 hours.  Mostly because carbon bits started circulating.

[OR75]

every 50 hours, with filter opening and UOA.

I was wondering if some one could describe how to access the oil screen. It is a pain in the a.. to reach and have refrained from opening it so far.

 

[The-sky-captain]

OR75- I'm not sure what plane you have and if the setup is the same as my 77J but the best way to do it is just to take your time. It's not that hard to remove and replace but the real challenge comes in safety wiring it back. It's a pain but I think it's also important to check frequently since it will show any large pieces of metal that won't make it to the spin on filter. Once you get the hang of it, it's only a 15-20 minute ordeal that you can do while the oil is draining. Good luck!

[Parker_Woodruff]

I changed the oil on my M20J every 50 hours or so.  I expect to do the same on my M20K.

[Texasmooneypilot]

Thanks to all who have responded.

Fly safe!