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2017 Onan QG4000-Kendall SuperD XA 15W-40-24 hours #4503868
08/31/17 08:10 PM
08/31/17 08:10 PM
Joined: Dec 2006
Posts: 450
USA
AITG Offline OP
AITG  Offline OP
Joined: Dec 2006
Posts: 450
USA
This is the first change on this gen set. The oil is actually the factory fill. It's an air cooled single cylinder engine and is not equipped with an oil filter.
Code:
Hours    Hrs.
on unit  on oil
24.9       24.9
Fe           27
Cr            1
Ni            0
Al            9
Cu            3
Pb            0
Sn            0
Cd            0
Ag            0
V             0
Si            9
Na           18
K             0
Ti           27
Mo           41
Sb            0
Mn            0
Li            1
B             6
Mg          861
Ca         1228
Ba            4
P          1019
Zn         1170
Fuel dil    2.2
Soot        <.1
Water       <.1
Vis 100 C  12.5


I added about a pint of Kendall as make-up oil. That accounts for the Titanium.

Last edited by AITG; 08/31/17 08:11 PM.

The answer to 80% of BITOG questions: Read the book, follow directions.
Changing oil is not maintenance. Maintenance is the science of inspecting equipment to find and fix things before they break.
Re: 2017 Onan QG4000-Kendall SuperD XA 15W-40-24 hours [Re: AITG] #4503904
08/31/17 09:06 PM
08/31/17 09:06 PM
Joined: Sep 2010
Posts: 7,594
Planet Earth
2015_PSD Offline
2015_PSD  Offline
Joined: Sep 2010
Posts: 7,594
Planet Earth
Kendall Super-Dxa is a great oil. I ran it in my PSD with good results and would do it again anytime. Thanks for the UOA.

Re: 2017 Onan QG4000-Kendall SuperD XA 15W-40-24 hours [Re: AITG] #4503911
08/31/17 09:22 PM
08/31/17 09:22 PM
Joined: Aug 2003
Posts: 13,147
NE,Ohio
Rand Offline
Rand  Offline
Joined: Aug 2003
Posts: 13,147
NE,Ohio
is it normal to use 16oz in 25 hours on a new engine?


2019 Jeep Cherokee Trailhawk 2.0T
Re: 2017 Onan QG4000-Kendall SuperD XA 15W-40-24 hours [Re: AITG] #4503949
08/31/17 11:02 PM
08/31/17 11:02 PM
Joined: Dec 2016
Posts: 7,204
Waco, TX
Linctex Offline
Linctex  Offline
Joined: Dec 2016
Posts: 7,204
Waco, TX
That's a lot of fuel dilution. I have never liked how "lazy" the automatic choke is on Onans.


"The evidence demands a verdict".
(Re:VOA)"it's nearly impossible to actually know the particular additives that are in there at what concentrations."
Re: 2017 Onan QG4000-Kendall SuperD XA 15W-40-24 hours [Re: Rand] #4504088
09/01/17 06:18 AM
09/01/17 06:18 AM
Joined: Dec 2006
Posts: 450
USA
AITG Offline OP
AITG  Offline OP
Joined: Dec 2006
Posts: 450
USA
Originally Posted By: Rand
is it normal to use 16oz in 25 hours on a new engine?


It used about 8 ounces. I have no idea of what's considered normal use but Onan does tell you that switching to 30 wt. will give you minimal consumption. I have a couple of gallons of 15W-40 left over from my Duramax so I will continue to use it.


The answer to 80% of BITOG questions: Read the book, follow directions.
Changing oil is not maintenance. Maintenance is the science of inspecting equipment to find and fix things before they break.
Re: 2017 Onan QG4000-Kendall SuperD XA 15W-40-24 hours [Re: AITG] #4504171
09/01/17 07:50 AM
09/01/17 07:50 AM
Joined: Nov 2012
Posts: 234
NorCal
Seventh Offline
Seventh  Offline
Joined: Nov 2012
Posts: 234
NorCal
Thanks for posting. Wear metals look good despite the fuel thinning it a bit.

I have the same gen set in my motorhome with roughly the same amount of hours on it.

Are you planning to stick with the 25 hour intervals or just did a shorter run because new? I know onan recommends 50 hour intervals.

Re: 2017 Onan QG4000-Kendall SuperD XA 15W-40-24 hours [Re: AITG] #4505555
09/02/17 02:26 PM
09/02/17 02:26 PM
Joined: Dec 2006
Posts: 450
USA
AITG Offline OP
AITG  Offline OP
Joined: Dec 2006
Posts: 450
USA
I'll probably run it no longer than 50-75 hours this time and see what I've got. It's a difficult call because it doesn't get much use. OTOH, arbitrarily changing it once a year seems like a waste. The annual oil change issue has been re-hashed ad nauseum here at BITOG. The most logical answer for justifying it is the life of the oil filter can in salt environments. No filter=no problem.
If I see moisture in the UOA or I get bored I'll shorten the drain interval. At a quart and a half I have enough oil on hand for the next 10 changes.


The answer to 80% of BITOG questions: Read the book, follow directions.
Changing oil is not maintenance. Maintenance is the science of inspecting equipment to find and fix things before they break.

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