Re: Warner Oil Consumption

mga1501 · Post by **mga1501** » Mon Jun 25, 2012 9:59 am

'What rate of oil consumption should I expect with my Warner 165. How much is normal, and how much is too much (upper limit). I do have a Warner Super Scarab handbook that gives the simple figure of .025 lb/ hp-hr, and that seems like a lot -- about 4.125 pounds per hour at rated power, which is about 2.5 to 2.75 quarts per hour!! I wonder if that is a sort of factory specified maximum tolerable before overhaul is required. I was thinking maybe 10% of that, or around .25 quart/hr (4 hours per quart). What are you Warner operators experiencing? Thanks.

Also, I would like to hear from you about expected fuel consumption, as once again, the Warner engine manual figures seem high, but not so very -- about 11 gph at 75% power (1900 to 1950 RPM).'

Ellen Starr · Post by **Ellen Starr** » Mon Jun 25, 2012 10:52 am

'On a well run in 165 on my 24, I have gotten fuel burns of 8.11 to 9.05 gals/ hr while running at at 21 inches. I always plan for 10/hr. Oil ran at .22 qts/hr on two calculations of 41 hrs. and 38 hrs.
My understanding is that the tach is set to be accurate at 2,500 rpm, i.e. will equal clock time. I run in the 1,900 to 2,000 range. So you need to be consistent when calculating consumption since the the tach hours will be about 75-80% of the clock hours. My numbers above were based on tach hours, not clock or hobbs.
Roger Starr
NC77630

--- On Mon, 6/25/12, mga1501 wrote:

From: mga1501
Subject: [fairchildclub] Warner Oil Consumption
To: fairchildclub@yahoogroups.com
Date: Monday, June 25, 2012, 8:59 AM

What rate of oil consumption should I expect with my Warner 165. How much is normal, and how much is too much (upper limit). I do have a Warner Super Scarab handbook that gives the simple figure of .025 lb/ hp-hr, and that seems like a lot -- about 4.125 pounds per hour at rated power, which is about 2.5 to 2.75 quarts per hour!! I wonder if that is a sort of factory specified maximum tolerable before overhaul is required. I was thinking maybe 10% of that, or around .25 quart/hr (4 hours per quart). What are you Warner operators experiencing? Thanks.

Also, I would like to hear from you about expected fuel consumption, as once again, the Warner engine manual figures seem high, but not so very -- about 11 gph at 75% power (1900 to 1950 RPM).

[Non-text portions of this message have been removed]

'

rw_flyer · Post by **rw_flyer** » Mon Jun 25, 2012 11:21 am

'Oil: On my 165 overall oil consumption varies quite a bit, because if you leave it shutdown for a week or two rockerbox/cylinder leak down oil starts to come into play as a significant factor. Steady state running (when on a cross country for several days) is roughly 1 qt every 3 hours (actual time). In my engine I think most of the consumed oil actually leaks out of the rocker arm bolts and leaky pushrod tube crush gaskets. The engine is old in calendar time and leaky, but it is a good running engine and fairly low time in hours so I have so far not wanted to tear into it to fix the oil leaks.Fuel: I flight plan for 11gph blocks and usually end up around 10 actual, depending on altitude and amount of climbing. I run at 86/71 wood prop which is biased towards cruise and can thus pull a little more power at lower altitudes. If you have an Aeromatic you can run quite a bit more power and fuel burn will correspondingly go up.
Note: this engine is on a Ryan, not a Fairchild 24, and the airframe is faster than the Fairchild so power settings vs. RPM will vary on how much power you can pull before over-speeding.
To: fairchildclub@yahoogroups.com
From: ellengstarr@yahoo.com
Date: Mon, 25 Jun 2012 09:52:29 -0700
Subject: Re: [fairchildclub] Warner Oil Consumption

On a well run in 165 on my 24, I have gotten fuel burns of 8.11 to 9.05 gals/ hr while running at at 21 inches. I always plan for 10/hr. Oil ran at .22 qts/hr on two calculations of 41 hrs. and 38 hrs.

My understanding is that the tach is set to be accurate at 2,500 rpm, i.e. will equal clock time. I run in the 1,900 to 2,000 range. So you need to be consistent when calculating consumption since the the tach hours will be about 75-80% of the clock hours. My numbers above were based on tach hours, not clock or hobbs.

Roger Starr

NC77630

--- On Mon, 6/25/12, mga1501 wrote:

From: mga1501

Subject: [fairchildclub] Warner Oil Consumption

To: fairchildclub@yahoogroups.com

Date: Monday, June 25, 2012, 8:59 AM

What rate of oil consumption should I expect with my Warner 165. How much is normal, and how much is too much (upper limit). I do have a Warner Super Scarab handbook that gives the simple figure of .025 lb/ hp-hr, and that seems like a lot -- about 4.125 pounds per hour at rated power, which is about 2.5 to 2.75 quarts per hour!! I wonder if that is a sort of factory specified maximum tolerable before overhaul is required. I was thinking maybe 10% of that, or around .25 quart/hr (4 hours per quart). What are you Warner operators experiencing? Thanks.

Also, I would like to hear from you about expected fuel consumption, as once again, the Warner engine manual figures seem high, but not so very -- about 11 gph at 75% power (1900 to 1950 RPM).

[Non-text portions of this message have been removed]

[Non-text portions of this message have been removed]

'

burnmcc@aol.com · Post by **burnmcc@aol.com** » Mon Jun 25, 2012 11:22 am

'I'm running a 145 Warner in the 24G. Aftere many "adventures", my Holloway engine is using, well, almost no oil at all. Maybe a qt between oil changes (around 25 hours). I know it seems hard to believe, but true. We used maybe the last Warner four ring pistons available out there, and Al takes care. But it pays off, and it is a very smooth running engine with low oil consumption. Great power, decent climb. For what it is worth, I see 8 gph at 1800 rpm.

Bill McClure

-----Original Message-----
From: Ellen Starr
To: fairchildclub
Sent: Mon, Jun 25, 2012 12:52 pm
Subject: Re: [fairchildclub] Warner Oil Consumption

On a well run in 165 on my 24, I have gotten fuel burns of 8.11 to 9.05 gals/ hr while running at at 21 inches. I always plan for 10/hr. Oil ran at .22 qts/hr on two calculations of 41 hrs. and 38 hrs.
My understanding is that the tach is set to be accurate at 2,500 rpm, i.e. will equal clock time. I run in the 1,900 to 2,000 range. So you need to be consistent when calculating consumption since the the tach hours will be about 75-80% of the clock hours. My numbers above were based on tach hours, not clock or hobbs.
Roger Starr
NC77630

--- On Mon, 6/25/12, mga1501 wrote:

From: mga1501
Subject: [fairchildclub] Warner Oil Consumption
To: fairchildclub@yahoogroups.com
Date: Monday, June 25, 2012, 8:59 AM

What rate of oil consumption should I expect with my Warner 165. How much is normal, and how much is too much (upper limit). I do have a Warner Super Scarab handbook that gives the simple figure of .025 lb/ hp-hr, and that seems like a lot -- about 4.125 pounds per hour at rated power, which is about 2.5 to 2.75 quarts per hour!! I wonder if that is a sort of factory specified maximum tolerable before overhaul is required. I was thinking maybe 10% of that, or around .25 quart/hr (4 hours per quart). What are you Warner operators experiencing? Thanks.

Also, I would like to hear from you about expected fuel consumption, as once again, the Warner engine manual figures seem high, but not so very -- about 11 gph at 75% power (1900 to 1950 RPM).

[Non-text portions of this message have been removed]

[Non-text portions of this message have been removed]

'

jhed9253@aol.com · Post by **jhed9253@aol.com** » Mon Jun 25, 2012 1:19 pm

'maybe 1 qt./hour for oil and 9.5 gal/hr for fuel.

-----Original Message-----
From: mga1501
To: fairchildclub
Sent: Mon, Jun 25, 2012 9:02 am
Subject: [fairchildclub] Warner Oil Consumption

What rate of oil consumption should I expect with my Warner 165. How much is normal, and how much is too much (upper limit). I do have a Warner Super Scarab handbook that gives the simple figure of .025 lb/ hp-hr, and that seems like a lot -- about 4.125 pounds per hour at rated power, which is about 2.5 to 2.75 quarts per hour!! I wonder if that is a sort of factory specified maximum tolerable before overhaul is required. I was thinking maybe 10% of that, or around .25 quart/hr (4 hours per quart). What are you Warner operators experiencing? Thanks.

Also, I would like to hear from you about expected fuel consumption, as once again, the Warner engine manual figures seem high, but not so very -- about 11 gph at 75% power (1900 to 1950 RPM).

[Non-text portions of this message have been removed]'

Tom_Downey · Post by **Tom_Downey** » Mon Jun 25, 2012 6:42 pm

'My Warner 165 uses practically no oil between changes, and uses 9-10 GPH cruise leaned to best power.

When you Warner allows oil to drain down to the lower rockers the check valve needs to be renewed to hold the oil in the tank.'