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  #1  
Old 12-30-2016, 12:31 PM
frghtdg frghtdg is offline
 
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Location: Boynton Beach, Florida
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Default Break-in engine oil

In a few weeks we'll be ready to break in a new 390 and although the break in informational sheet with the engine stipulates using a 50 weight mineral oil, others that have been in the business a while believe not necessary.
Hmmmm, we plan on following the Lycoming protocol.
What about after the break in?
What oil have you settled on?
Phillips with the wear additive?
Without?
Summer vs. winter. North vs. South. Obama vs. Putin.
I search the site for info with no luck.
Found some on Filters.
Plan on using Tempest , it has a magnet. "Imagine that, saids Forest".
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Last edited by frghtdg : 12-30-2016 at 12:33 PM. Reason: correct spelling
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  #2  
Old 12-30-2016, 12:49 PM
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N941WR N941WR is offline
 
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Mahlon at Mattatuck once told me to use Phillips from start to finish with no need to add anything.

Of course, he also said to change it at 10 hours, which I did. I then changed it at 50 hours TT before moving to 50 hour intervals.
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Last edited by N941WR : 12-30-2016 at 01:51 PM.
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  #3  
Old 12-30-2016, 01:33 PM
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az_gila az_gila is offline
 
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Location: 57AZ - NW Tucson area
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Quote:
Originally Posted by N941WR View Post
Mallon at Mattatuck once told me to use Phillips from start to finish with no need to add anything.

Of course, he also said to change it at 10 hours, which I did. I then changed it at 50 hours TT before moving to 50 hour intervals.
Pretty close to the ECI recommendations, see page 13 here -

http://www.eci.aero/pdf/BreakInInstructions.pdf

They say change at 10, 35, 60 hours and then every 50...
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  #4  
Old 12-30-2016, 01:43 PM
deek deek is offline
 
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Location: Flathead Lake Montana - 8S1
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I've had 5 Mattituck engines since 1983. Jay Wickham and Mahlon had a slight bias for Phillips oil; Phil Haponic preferred Shell. Mattituck performed some informal tests with old camshafts left outside after dipping them in oil; and although unscientific, the straight grade Shell seemed to offer slightly more corrosion resistance.

If it were my 390, I'd break-in with straight mineral oil and then switch in 25-50 hours to either Philips X/C or AS100W+
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Last edited by deek : 12-30-2016 at 01:45 PM.
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  #5  
Old 12-30-2016, 02:00 PM
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erich weaver erich weaver is offline
 
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Suggest you listen to the "all about oil" webinar in the EAA website archives

A summary is here:

http://www.vansairforce.com/communit...61&postcount=1

Erich
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  #6  
Old 12-30-2016, 04:40 PM
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woodmanrog woodmanrog is offline
 
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Location: Florida
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Per Lycoming rep. Straight mineral oil for first 50 hours. 1st change at 10 hours, 2nd at 35 hrs, finally change to your preferred oil from then on. Filters are changed and inspected at each oil change. Don't forget the oil screen at the rear of the engine by at least the 50 hour mark. We will be using Exxon Elite as I have in the last 3 RV6'S. We have had great success with this product. Cheers and have a great new year.
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  #7  
Old 12-30-2016, 05:29 PM
jrs14855 jrs14855 is offline
 
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Location: Lake Havasu City AZ
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Default Oil

50 hour oil change interval with filter, 25 hours with screen only. Don't forget the sump screen.
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  #8  
Old 12-30-2016, 09:02 PM
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RV6_flyer RV6_flyer is offline
 
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Location: NC25
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I prefer to follow engine manufacturer's recommendations regarding oil.

Lycoming Lubricating Oil Recommendations can be found in latest copy Service Instruction 1014.

I believe your engine would be covered under recommendations found in Part II D. That would be to use Mineral Oil the first 50-hours.

Many old timers recommend straight mineral oil. I like using multi-weight mineral oil. The last sentence in Part I B approves multiviscosity 20W50 oil.

I have broken in almost every aircraft engine that I have done cylinder replacement or new engines on Phillips 20W50M and it meets Lycoming requirements called out in SI1014M for most normally aspirated engines that Lycoming presently has in production.

I also like to run Phillips X/C 20W50 after break-in until there are 100 hours on the new cylinders. After 100-hours, I tend to prefer multi-viscosity oils that has the Lycoming additive that is required for the Lycoming Series 76 engines that require extra corrosion protection.
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  #9  
Old 12-30-2016, 11:42 PM
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az_gila az_gila is offline
 
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Quote:
Originally Posted by RV6_flyer View Post
I prefer to follow engine manufacturer's recommendations regarding oil.

Lycoming Lubricating Oil Recommendations can be found in latest copy Service Instruction 1014.

......
Interesting variation on the timing for the first oil change from the Lycoming SI wrt the other times mentioned earlier -

2. Do not operate the engine longer than five hours before the first oil change.
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  #10  
Old 12-31-2016, 05:23 AM
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mike newall mike newall is offline
 
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Location: Yorkshire, England
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Spoke with Mahlon prior to our start on our ECI motor and followed his recommend but we used Shell as Phillips not readily available here in the UK.

Changed oil at 5, 20 and from then on we always change at 25 hours or every 4 months whichever comes sooner. Please do not forget the calendar suggestion as many of us do not fly the hours off. If you were a sole pilot, doing maybe 20 - 50 hours a year, I would be changing the oil each 6 months when you inspect the airplane. Oil changes represent the cheapest and best maintenance for any motor.

Multigrade offer many benefits and evidence shows that it gives better lay up retention on the cam.

Brand - whatever is your preference, I doubt any of them have the miracle ingredient that is unobtainable elsewhere.
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