Oil

[mike4370]

How much oil should you have for normal flights in the 182? for instance on the 172 you should have 5 to 7 quarts.

[chav241]

The minimum oil capacity is nine quarts. Fill to 10 quarts for normal flights of less than three hours. For extended flight, fill to 12 quarts.
A2A 182 TANK IS 9 QUARTS

[AKar]

You don't want to overfill your sump to 12 Qts if it takes 8 to 9. The "minimum safe" in the engine is about 4 Qts. For extended flights you might consider refilling if close to that, otherwise no sweat. Just add some in every now and then if required between the oil changes.

-Esa

[Great Ozzie]

The sump contains a max of 9 quarts. From the POH:

The engine should not be operated on less than four quarts of oil. To minimize loss of oil through the breather, fill to eight quarts for normal flights of less than three hours. For extended flight, fill to nine quarts (dipstick indication only)..

I normally flew "a quart low" max, because if you top off, the airplane's belly is going to be wearing that quart (it can be blown out the breather tube).

Also, it's a good idea to pay attention to the oil consumption rate.

-Rob

[lonewulf47]

And here about the max. Oil consumption for the Lycoming IO-540-AB: (the 4th column being qts/hr)

[AKar]

Also, it's a good idea to pay attention to the oil consumption rate.

A very good idea indeed! 'Trend monitoring' being one of the most under-valuated benefits of the whole industry. The absolute consumption limits for oil are purely ridiculous for these engines, you must note that the consumption spikes up over time to spot a trouble instead of monitoring it staying under the limits, usually.

Edit: based mostly on assumption, that recommendation you quote would indicate that the 9 Qts maximum would result in an oil loss through the breather; which means the 8 Qts limit would be the maximum normally recommended.

-Esa

[chav241]

You don't want to overfill your sump to 12 Qts if it takes 8 to 9. The "minimum safe" in the engine is about 4 Qts. For extended flights you might consider refilling if close to that, otherwise no sweat. Just add some in every now and then if required between the oil changes.

-Esa

Quite true though my quote was from my own POH, I admit some what of a different engine to what the A2A one has. My quotes where based on a Continental O-470-R I couldn't remember which engine A2A had used in their model , but a quart from the top of the dipstick should suffice.

[AKar]

TCM (Continental) O-470 has about 12 Qts oil sump capacity, so it's importantly different. The engine in the latest 182 models is Lycoming IO-540-AB1A5. Cessna switched the engine manufacturer for some reason at one point.

These different engine options and all rise some confusion in maintenance circles too, so folks like me just attempt to have all the possible data available when possible for review! It either means something or it won't.

Oh by the way, concerning an other discussion, the minimum oil temp limit for take-off with TCM engines is at around 75°F. I don't think that's a bad practice for the Lycomings too if one has wondered that!

-Esa