0320 e2d engine

0320 e2d engine

This is the engine on my 1968 C 172 I which I purchased in Nov 2003 and on which I have 157 hours logged since then. I have one
issue that is making me a bit concerned:

Engine runs very well, however ever 4 hours it needs 1 Liter or Quart of Oil? presently I use Aeroshell 15W-50.

This seems to me a bit on the high side, however since motor runs very well I am bit reluctant to take engine apart. Engine has 1325 hours since last Mayor overhaul.

Presently I add oil when it goes to 5 or less, if I fill it when its at
5 1/2 then even after one hour its again back to same. The muffler
is clean, also no oil anywhere dripping, nor any at the bottom of
the plain.

I suppose some oil is going thru the rings and burns off slowly.

Any idea what would be the best at this point, appreciate your input.

thanks Werner Koch

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Re: 0320 e2d engine

I have a 1980 172; I try to keep the oil at 6 qts.  I only add when it gets to 5.5 qts.  It seems to like the 6 qt mark and stays pretty steady there.  If I fill it to 7, it will be back at 6 in short order...I think it throws it out thru the crankcase breather.  Your sounds pretty normal.

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Re: 0320 e2d engine

Are you losing any out of the breather?

>Any idea what would be the best at this point, appreciate your input.

1. Do you have the oil analyzed at each change?
It is very cheap (I pay C$16.00) and gives you a lot of information, and allows you to see trends.

2. Talk to your a&e about running straight weight. Many places are now recommending that instead of 20 - 50.
I now run straight 80 or straight 100 depending on season.

HTH

Tony
C-GICE

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Re: 0320 e2d engine

Werner,

I have a O320 E2D also with ~650 hours SMOH.  I use about 1 qt in 10 hours.  I've use 100 W straight in Spring-Summer & 80 W late fall-winter.  I fill my oil to 7 qts and let it run down to 6 qts.  I don't like it do go below 6 qts per the owners manual.  The max capacity is 8 qts oil which is just a waste as I lose it rapidly, I assume out the breather.

I've ask my AP about the amount and he was concerned even at 4 hours per quart.  As long as there is no leak, and your compression is good.

my experience is soley with this plane, so it's just one data point.

Has the oil use changed suddenly?

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Re: 0320 e2d engine

Using the above search engine, enter the word "confession" under the General Discussion forum.
You'll find a great thread on oil.

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Re: 0320 e2d engine

I use 100W plus and add a quart at the 6 mark. Consumption is a quart every 15-20 hours. The bottom end has 1000 hours and the top has 400.

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Re: 0320 e2d engine

interesting!  I also have a 68 with O320E2D.  total time about 1300 hours!  I have about 300 hours to my credit on this engine.  never leaks a drop but uses a quart in 4-6 hours.  I fill to 7 when it reaches 6 (above 7 blows out quickly)  my compressions and oil analysis are normal.  my mechanic is unconcerned and tells me that this can go on almost forever.  he is reluctant to spend my money on engine parts when oil is relatively cheap.  Incidentally, I tried straight weight oils (100 summer and 80 winter) and contrary to popular dogma the oil consumption was higher!  I have stayed with Aeroshell 15W50 for the last two years with no changes in consumption..go figure!

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Re: 0320 e2d engine

I have read several articles concerning the differences in oil type.  In my personal experience, I have found several instances where  a pilot complains of oil leaks, only to find out they use 15W50.  Upon switching to straight weight 100W, the leaks stop.  This has occured only a few times that I have witnessed.  The 15W50 is much thinnner, and tends to foam more readily, which results in it coming out the breather.  I'm not bashing 15W50, it's a great oil, but it's worth a shot to see if it makes a difference.

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Re: 0320 e2d engine

thanks for info pretty well exactly same as mine. I will however once
try straight 100 and see what happens, another mechanic told me
to switch to Philips 66. The engine runs well, I have put on 160 hours so far this year and if it stays as it is now, i won't bother
taking tops off for now.

If I get diff. result with other oils will switch back to aeroshell 25-50,
unless oil consump drops with others.
Will see, let you know.

regards
Werner Koch

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Re: 0320 e2d engine

there is not a drop of oil anywhere on the engine nor anywhere
else on the plane, so if it came out the breather, believe you would
see same, also the exhaust stack is clean, ie no oil traces or blackening, but still uses a qt every 4 hours.
I will try staight 100 one and also might switch to Philips 66 to see
what happens.

thanks W Koch

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Re: 0320 e2d engine

Werner, By chance, does your engine have Chrome Cylinders?

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Re: 0320 e2d engine

To tell you the truth, I don't know, but I don't think so.

Why are you asking, is there a difference in oil consumption?

thanks
Werner

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Re: 0320 e2d engine

I had a problem with an engine with Chrome Cylinders. The walls had Glazed and the rings would not seat. The oil consumption was high but there were no visible tale tale signs of where the oil was going except it was probably burning it and going out the exhaust.

This isn't as likely to happen with Steel Cylinders.
Jack

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Re: 0320 e2d engine

Another thing, try pulling the plugs and checking for oil on the lower ones.  Sometimes, if there is no evidence of oil on the exterior of the engine or running down the belly, then it's an internal leak or burn. Bad valve guide?  Not likely with a low time engine like yours, but you never know.  Depends on who did the Major on it.  Therefore it could be burning up in the combustion chamber.  Also, did he engine get a proper break in?  If not, and the rings didn't seat properly, it's leakng into the combustion chamber that way.

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Re: 0320 e2d engine

With 1300 hours smoh on your engine I wouldn't lie awake worrying about burning a bit of oil, I would be more concerned with the engine swallowing an exhaust valve if it has not had a top OH with new exhaust valves.  The heads seem to come off these valves sometime between 1300 and 1600 hours with very unpleasant effects.  Incidentally my O320-E2D with 1850 tt, 300 since top, burns about 2 liters in 50 hours using Shell 15-50.

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Re: 0320 e2d engine

We have 2 172 with o320e2d and have consistentaly run these to 3000 hours with repalcing maybe one cylinder in this time. havealways used Phillups XC and oil consumption stays around  1 qt per 10 hour. Someone mentioned it earlier it all could revolvearound how engine was broken in.

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Re: 0320 e2d engine

My landing light beam points up at the hangar door ... not a big help when taxiing.  Is there a way to adjust the beam down lower?  (The landing light is in the engine cowling on the L, not the wing.)  Thank you.

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