Jump to content

- - - - -

Oil Analysis Lead Abnormal Allison 2000

  • Please log in to reply
4 replies to this topic

#1 rlbarkleyii


    Advanced Member

  • Members
  • PipPipPip
  • 30 posts

Posted 18 October 2013 - 02:44 AM

Just got the results of oil analysis on Allison 2000 tranny oil. All was within normal limits except lead which was slightly abnormal. normal was <50, my reading was 58. This unit is new to me and this is the first sample for me after aprox 10K miles. Plan on shortening the next sample interval, and re-test. Analysis company indicated lead may come from clutches. 


Anyone experianced this type of abnormalty?



  • 0

2002 Winnebago Journey 32", Diesel pusher, Cummins ISB 275 HP, Allison 2000MH, 4.56 Rear Ratio, Freightliner XC Chassis, Onan 6.5KW  propane, pulling Toad; 2012 Nisson Xterra 4X4 Auto, Roadmaster Baseplate, and towbar, Remco Driveshaft Disconnect. Forty Year's on the road!
Off and On again Fulltimer.

#2 J79Engine



  • Members
  • PipPip
  • 24 posts
  • Location:West Chester Ohio
  • I travel:With Pets

Posted 18 October 2013 - 11:48 AM



I did not know the RV industry was doing this type testing on MH transmissions. We have been doing oil testing for many years on aircraft engines which varies depending on what is found in the sample.


The sample can drive maintenance to remove the engine and will pin point the cause in most cases or at least tell you if it is a bearing or carbon seal. The oil should be drained and flushed at least once before ( a few hundred miles between oil samples) retesting to make sure the level of lead is maintaining the above normal level or if it is increasing. The second test once done will tell you how quickly you need to get it fixed.


This is how we handle the oil testing in the Military Aviation industry so the same should work for your problem solving.

  • 0

#3 Allegiance40x


    Advanced Member

  • Members
  • PipPipPip
  • 369 posts
  • Location:Somewhere in the USA.

Posted 18 October 2013 - 07:18 PM

 rlbarkleyii, you may want to check out www.irv2.com  It is a forum that has an entire thread on Allison transmissions, including a section that is authored by a retired Allison engineer who helped develop Transynd.  He can answer any technical questions you have.

  • 0

#4 wolfe10


    Advanced Member

  • Moderator, Super
  • PipPipPip
  • 3,690 posts
  • Location:League City, Texas

Posted 18 October 2013 - 10:04 PM

Actually, Tom is the "go to" guy here on the FMCA Forum as well: http://community.fmc...luids-engineer/


You can certainly PM (Private Message) him if you have a specific question.

  • 0

Dianne and Brett Wolfe
1997 Safari Sahara 3540
Moderator, FMCA.com Forums
Chairman, FMCA Technical Advisory Committee
Member, FMCA Long-Range and Development Committee 2007-2009
Moderator, http://www.dieselrvclub.org/(FMCA chapter)



    Advanced Member

  • Members
  • PipPipPip
  • 268 posts
  • Location:Fort Worth Texas

Posted 19 October 2013 - 10:10 AM

The first thing to do is sample aging in say 1000 miles. We want to see if the lead levels in crease or what is going on. I would not change the oil till you get a second sample as what you need is more than one sample on the oil. Oil analysis is basically trend analysis.


I wouldn’t get to worried the lead is only 8 ppm over the normal if it was 30 -60 over I would be concerned. I will be interested in what your next  report says. When you change your fluid I recommend you use Transend.


I use to work in an oil lab doing Spectrometric oil analysis.



  • 0

2003 Bounder 38N
5.9 Cummins
Allison 3000MH tran.
Towing a 2014 Honda CRV with a blue Ox tow bar

A man who carries a cat by the tail learns something he can learn in no other way.

-Mark Twain-


0 user(s) are reading this topic

0 members, 0 guests, 0 anonymous users