True or False?

True or False

  • True

    Votes: 21 51.2%

  • False

    Votes: 20 48.8%
  • Total voters
    41
  • Poll closed .
I blame the Japanese. Until they started building engines(car, motorcycle, lawnmower, etc) oil was consumed as normal part of engine operation. Now we are all confused as to how it should work.:D
 
The key word is "may."

Insufficient flow of oil may result in low oil consumption... until the engine eats itself.
 
VanDy said:
True, don't believe us? Ask Mike Busch, Lie #5

http://www.avweb.com/news/maint/182849-1.html?redirected=1
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Good read, note though:

Experience seems to indicate that oil consumption lower than about a quart in 20 hours may not bode well for long cylinder life.
Click to expand...

I would consider one qt / 20 hours to be low consumption...really low actually.

And at that rate, one wouldn't expect to add more than two quarts between 50 hour oil changes which is the rate that brought up the original question.
 
I agree, and he said it could have been three,


timwinters said:
Good read, note though:



I would consider one qt / 20 hours to be low consumption...really low actually.

And at that rate, one wouldn't expect to add more than two quarts between 50 hour oil changes which is the rate that brought up the original question.
Click to expand...
 
timwinters said:
I would consider one qt / 20 hours to be low consumption...really low actually.

And at that rate, one wouldn't expect to add more than two quarts between 50 hour oil changes which is the rate that brought up the original question.
Click to expand...

When I bought the 'kota it would use one quart in the first 25 hours and then two quarts in the next 25 hours. The engine had what a couple A&Ps called "high" blow-by. I figured older oil was higher viscosity which resulted in more carry-over from the blow-by. The cylinders only lasted another 600 hours...
 
timwinters said:
And at that rate, one wouldn't expect to add more than two quarts between 50 hour oil changes which is the rate that brought up the original question.
Click to expand...


Yea I honestly didnt pay enough attention on how much it consumed. Like I mentioned earlier I will make sure to get the exact count.

I cant recall what the oil level was when it got out of annual in December but I do remeber putting in 2 qrts of oil in to make sure the level was around 9. So its probably around 2-4 qrts but I wasnt sure so I just put down as consuming 2qrts.

I got my eyes on it for sure now. As I get more invested into flying im starting to pick up better habits. I think there for a while during my training I was more worried about learning to fly and not so much learning about my plane. A rookie mistake im sure.

Live and learn :lol:
 
flyingmoose said:
Sweet.. I got my own thread. Thanks Tim :)
Click to expand...

No problem, anytime! ;)

VanDy said:
I agree, and he said it could have been three,
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I guess a lot of this also boils down to what each individual's interpretation is of "low oil consumption". Mike Busch put the dividing line at 1 qt / 20 hrs. But, I would view that consumption rate as the line between low consumption and no consumption.

I say this because---in my engine anyway---that consumption rate would result in adding no oil between oil changes of 40 to 50 hour intervals. I service my engine with 10 qts of oil + 1 pt of camguard and I'll add a quart when it gets down to 8 on the stick. At 1 qt / 20 hours I'd just be getting to 8 when it's time to change. That scenario, in my definition, would constitute no consumption, even though the engine is indeed using oil.

My reality is that I usually have to add a quart at 25 to 30 hours. So, I'm actually "using" a quart every 10. These days though, I change my oil at 25 to 30 because I change it at 4 month max intervals regardless of time. Four years ago I was changing it every two months...at 50 hours or more!
 
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I add a qt about every 8 hours and usually wind up adding 2 qts between 25 hour oil changes. I find very little, if any under the hull or on the hangar floor, so it must be going out the exhaust. This seems a little high to me on an engine with about 300 hours on it, but I add a qt when it gets down to 6. What do you guys think? (It's a lycoming O360 in a Cessna 172n with an oil filter and oil cooler).
 
About a quart every 10 hours is what our Continental 85 is getting. I'm happy with that. I found that multigrade pays for itself with slightly longer qt/hr ratio.
 
I thought this was going to be the age old aviation question......



Which way is up? True or False???
 
12 true, 12 false. I gotta say...on this topic...that doesn't surprise me in the least.
 
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