Jabiru Owners Group

Welcome to the world of Jabiru

Oil analysis help.

Post for help and advice on engines, fuel systems, ignition and engine electrics.
  • Advertisement

Oil analysis help.

Postby Kitfox » Fri Sep 09, 2016 2:27 am

Greetings, I just got back the results from my third oil analysis from AVLAB here in the US. The analysis is supposed to compare with other Jabiru engines of similar time on them. I don't think they have other Jabirus in their database as they offer no comparisons. That's where you guys come in. All three analysis for my 3300 came back as normal except for Iron which was around 180ppm +or-10. All oil changes were around 35hrs. Allthough they could not compare values with a similar engine, they did comment that the Iron reading "seemed high" on all three samples. They did note that this may be because of the break in cycle. Can anyone comment on their experience with oil analysis, especially with regard to Iron wear during the first 100hrs? Are these normal Iron figures for Jabiru engines during the first 100hrs? I cut and pasted the results and comments below. Without engines to compare with elevated Iron numbers have little meaning. Thanks for your responses.

Sample Date:
 8/25/2016
Analysis Date:
 9/7/2016
Sample Number:
 P18
Cylinder Type:
 STEEL
TSN/TSO:
 100
Oil Hours:
 35
Filter Hours:
 35
Oil Added:
 1

 
*** OIL ANALYSIS RESULTS IN PARTS PER MILLION ***
 Iron 186.1  Copper 11.9 Nickel 1.6 Chromium 8.9  Silver < 0.1 Magn. 1.7 Alum. 25.1 Lead 4396 Silicon 10.6  Titanium < 0.1  Tin < 0.1  Moly. < 0.1

Comments: IRON SEEMS HIGH. HIGH VALUES AND INCREASES ARE NOT UNCOMMON DURING THE ENGINE BREAK-IN CYCLE. ALL OTHER OIL VALUES SEEM FINE FOR THE ENGINE BREAK-IN CYCLE. WE WILL CONTINUE TO MONITOR THIS ENGINE WITH YOUR NEXT SAMPLE. PLEASE CONTACT THE ENGINE MANUFACTURER'S SERVICE REP IF FURTHER ASSISTANCE IS NEEDED.  
Kitfox
Newbie
Newbie
 
Posts: 6
Joined: Sun Apr 10, 2016 6:37 pm
Location: Geneva Florida
Aircraft: Kitfox

Re: Oil analysis help.

Postby PKnight » Sat Sep 10, 2016 10:41 am

I have a series of three oil results from AvLab on my 3300. Not from the break-in cycle but I think they will provide some re-assurance.
Data is as follows:-

Hours Iron Copper Nickel Chromium Silver Magn Alum Lead
300 143 10.3 2.1 14.6 0 0.2 17.9 6173
499 66 7.9 1.1 4.6 0 1.1 19.9 2882
600 71 10 2 5.0 0 0 19.0 829

The drop in lead corresponded with the switch from Avgas to UL91.
Does anyone know where you can get access to the AvLab kits (or equivalent) in the UK I have not seen them on sale for some years.

Hope this helps

Peter
PKnight
Beginner
Beginner
 
Posts: 38
Joined: Mon Feb 09, 2015 9:49 am
Aircraft: J430

Re: Oil analysis help.

Postby Kitfox » Sat Sep 10, 2016 8:48 pm

Hi Peter, thanks for your reply. Your 300 hour sample was not much less than mine. Having a baseline with which to compare really helps. Hopefully the iron figure will go down over time. I got my metal check kit from Amazon here in the US. https://smile.amazon.com/Aviation-Labor ... alysis+kit Hope this helps Jeff :D
Kitfox
Newbie
Newbie
 
Posts: 6
Joined: Sun Apr 10, 2016 6:37 pm
Location: Geneva Florida
Aircraft: Kitfox


Return to Engines, Ignition, Fuel System and Electrical

Who is online

Users browsing this forum: No registered users and 2 guests