Cessna 150 Oil Burn!! Yea 1.5 qt's in 3 hours !!!!!

[NW_Pilot]

Cessna 150 Oil Burn!! Yea 1.5 qt's in 3 hours !!!!! I parked the Thing told owner to fix prior to flying to Peru!!!!! He is now selling on Ebay where he bought it!!!

 

[CrimsonEclipse]

Rings.

Time since top or major overhaul?

CE

 

[NW_Pilot]

Rings.

Time since top or major overhaul?

CE

900smoh? According to the logs about 220 ago back in 1999 new pistons & rings main bearings on used cylinders when it digested an accessory case and was town down and inspected. I Will post the log entries....

Compressions 60, 65, 72 and 74

I don't think this thing would make it to Peru in it's condition I have never seen a 150 well O-200 burn that much oil in 3 hours kind of excessive and scary!:nuts:

 

[CrimsonEclipse]

900 is mid time, but I've seen poor overhauls exceed clearences by
a considerable margin. As a renter, all you can do is look for obvious
leaks on the exterior of the engine, check the case vent or have a mech
check the plugs for oil deposites (in case one set of rings went bad).

Other than that, make sure the guy flying it to Peru brings a raft.

(I remember fueling a guy trying to fly a C-150 from FXE to Mexico.
came up 50 miles short)

CE

 

[avbug]

Other than that, make sure the guy flying it to Peru brings a raft.

Aaah...you know Peru isn't an island, right?

A rough guide for maximum piston engine oil consumption (rule of thumb only; apply the specific engine manufacturer's numbers to your aircraft) is .006 X Horsepower times four, then divide that number by 7.4.

Another common rule is .01 lbs. of oil per bhp per hour...works out close, but again, refer to the specific application. Bear in mind that oil consumption rates in excess of these do not necessarily indicate an unsafe or excessively worn engine. Much more information is required

Typical oil consumption for an O-200 is around one quart per three to seven hours of operation, depending on the conditions of operation, and the condition of the engine. Some engines can go fifteen hous or more without needing a quart, others take much more...Oil consumption by itself is not a direct indication of engine health. Neither is compression, nor oil color...though these three are often cited by the layman as important signposts. By themselves, they mean nothing.

By comparison, in larger piston engines, I've averaged three to six gallons per hour fuel consumption, and in some cases, a full 55 gallon barrel or more gets used to top the oil with every fueling.

 

[NW_Pilot]

Aaah...you know Peru isn't an island, right?

Avbug, Yea I know where Peru is! :laugh: The routing for fuel availability & airports of entry for this flight took me down the Florida coast through the Caribbean Islands in through Venezuela , Colombia, Ecuador & Peru fuel was no more than 150m NM away and AOE's were widely available.

If I did the route through Mexico & Central America I had Fuel Availability and AOE problems especially between Panama headed south and entering Colombia.

The 150 is limited in the route it can take.

I have flown a large handful of Cessna 150's. Never have I seen one burn a quart and a half of oil in three hours. Maybe one quart in seven to ten hours. I know my buck fifty burns about 1 quart in about twenty hours using 100W and fifteen hours if using 15W50. A quart and a half in 3 hours is to much for comfort for the type of terrain to be flown over in a buck fifty on this flight.

 

[NW_Pilot]

Last few Years of Engine Log's on that Buck Fifty.


Click Here For PDF File

 

[avbug]

Again, without qualification, the actual quarts or gallons of oil burned is meaningless. I've watched people put in a quart an hour in a turbopropeller engine, which under normal circumstances should have little or no oil consumption...yet when I operated the same engine, it didn't take a drop. The differrence was that I didn't keep overfilling it.

What constitutes overfilling depends on the engine; some prefer more oil, others prefer less, and will dispose of excess oil down to that point. Is the oil being blown out, consumed, burned, dribbled out the exhaust...where's it going, and why? Oil consumption by itself is meaningless. Unless you're out.

 

[Lazy8]

I've got a lot of time in many new C172S models and every one of them will blow out 2 quarts from full. (8 down to 6 quarts) and stay at 6. Doesn't take long either.

g

 

[NW Flyer]

I've got a lot of time in many new C172S models and every one of them will blow out 2 quarts from full. (8 down to 6 quarts) and stay at 6. Doesn't take long either.

g

DING DING DING!!!

That description could be used to describe almost every aircraft engine I have experience with, piston or turbine! I can't remember ONE engine that liked to ride at the high mark on the dipstick, and filling it to that mark did nothing but keep the paper towel company in business!

 

[Lazy8]

And what's up with the PA28R-201's minimum oil level being 2 quarts? Good lord. Who would run it that low?



g

 

[svcta]

I think you'll find that the 2 quarts is not in the "operating range". Most engines will run on much less than the normal range, but people shouldn't make a habit of it.

 

[Swass]

Good ole 'Bug would had that buck fifty down to Peru irregardless. He woulda routed throught the most death defying terrain possible too, while being shot at by the locals. Not a thang to Avvy, hell, he went through worse to get to his computer today to log on.

 

[avbug]

You sure about that?

 

[flyf15]

We used to have a plane at one of the schools I instructed at... a C172RG... that burned 0.75qt/hr no matter if it were full or near empty. So reliable that you could tell how many hours the plane had flown by how many quarts had to be put in it. I refused to fly the plane and wouldn't let my students anywhere near it... kept insisting to the owner that it was a serious problem, but he never did seem to care as long as the plane kept getting business.