Onan Oil Filter

M

Melbo

Member
Aug 19, 2018
155
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75
Finally got a chance to start working on the new to me GMC. Decided to start with the Onan and service it up and see if it will produce electricity.
It only has 317 hours on the meter. I picked up a gallon of Rotella 15-40 and went to NAPA and gave them the WIX number ( WIX 51762 ) I gleaned from
previous postings on this board. I got a NAPA Gold 1516. It was a "little" longer than I might like. It fit ok and the onan will slide in but it rubs
on the way in. A better NAPA number I think is NAPA Gold 1374. Do others here use the NAPA Gold oil filters. I have been using them in other
applications and the warehouse is close to where I work on the GMC. Any input is appreciated. I will try to start the Onan tomorrow and see if it
will start and produce electricity. I am going to supply the gas from an alternate source to be sure the fuel is fresh and available to the onan.
Any tips or observations as I proceed will help keep me on track

THANKS

Melbo
--
Albuquerque NM Bus Conversion 1978 MCI 1973 GMC
 
>
> I picked up a gallon of Rotella 15-40 and went to NAPA and gave them the WIX number ( WIX 51762 ) I gleaned from previous postings on this board.

I use Cummins/Onan 122-0800. No guesswork required.

—Jim

Jim Miller
1977 Eleganza
1977 Royale
Hamilton, OH
 
A quick search shows the Cummins-Onan part selling from 8.92 to 24.95. Pay attention to where you buy it. All searched were genuine Onan parts, with
pictures.

--johnny
--
76 26' Eleganza(?) with beaucoup mods and add - ons.
Braselton, Ga.
"I forgive them all, save those who hurt the dogs. They must answer to me in hell" - ol Andy, paraphrased
 
Melbo,
I also use the Wix 51762.
$10.00 on Amazon.
Scott.
--
Scott Nutter
1978 Royale Center Kitchen, Patterson 455, switch pitch tranny, 3.21 final drive, Quad bags, tankless water heater, everything Lenzi. Alex Ferrera
installed MSD Atomic EFI
Houston, Texas
 
I have accounts a both Cummins and NAPA and they are both close so that makes it easy the next time I need to do this. The coil was bad so I just
ordered one from JimK. As a secondary question how often do you service your generators. I typically service my generator in the bus annually
regardless of hours to prevent condensation from getting ahead of me. I was planning on the same for the GMC but didn't know if the gas engine
requires more attention.

Thank You for the responses

Melbo
--
Albuquerque NM Bus Conversion 1978 MCI 1973 GMC
 
Wix makes Napa filters. Drop the first 5 and you have the Napa number.
Wiz 51762 = Napa 1762

> I have accounts a both Cummins and NAPA and they are both close so that
> makes it easy the next time I need to do this. The coil was bad so I just
> ordered one from JimK. As a secondary question how often do you service
> your generators. I typically service my generator in the bus annually
> regardless of hours to prevent condensation from getting ahead of me. I
> was planning on the same for the GMC but didn't know if the gas engine
> requires more attention.
>
> Thank You for the responses
>
> Melbo
> --
> Albuquerque NM Bus Conversion 1978 MCI 1973 GMC
>
> _______________________________________________
> GMCnet mailing list
> Unsubscribe or Change List Options:
> http://list.gmcnet.org/mailman/listinfo/gmclist_list.gmcnet.org
>

--
Bruce Hart
1976 Palm Beach
Milliken, Co
GMC=Got More Class
 
Specs on the Napa 1762 oil filter

https://www.napaonline.com/en/p/FIL1762

Scroll down!!!

> Wix makes Napa filters. Drop the first 5 and you have the Napa number.
> Wiz 51762 = Napa 1762
>

>
>> I have accounts a both Cummins and NAPA and they are both close so that
>> makes it easy the next time I need to do this. The coil was bad so I just
>> ordered one from JimK. As a secondary question how often do you service
>> your generators. I typically service my generator in the bus annually
>> regardless of hours to prevent condensation from getting ahead of me. I
>> was planning on the same for the GMC but didn't know if the gas engine
>> requires more attention.
>>
>> Thank You for the responses
>>
>> Melbo
>> --
>> Albuquerque NM Bus Conversion 1978 MCI 1973 GMC
>>
>> _______________________________________________
>> GMCnet mailing list
>> Unsubscribe or Change List Options:
>> http://list.gmcnet.org/mailman/listinfo/gmclist_list.gmcnet.org
>>
>
>
> --
> Bruce Hart
> 1976 Palm Beach
> Milliken, Co
> GMC=Got More Class
>
>

--
Bruce Hart
1976 Palm Beach
Milliken, Co
GMC=Got More Class
 
I installed a NAPA 1516 Gold filter on my 6K onan and it fit and the unit slides in BUT it rubs the top of the filter. The filter I took out was a
NAPA Gold 1374 and like you mentioned it is recessed so it is not easy to remove. Following this thread it seems that the WIX 51762 would be a NAPA
1762 Gold. The MGL 51516 must have been the number that got me the 1516 at NAPA.

Any way you figure the long filter number that I have is NAPA 1516 Gold. The short number that I have is NAPA 1374 Gold.

Just remember that the 1516 rubs as the tray slides in.

HTH

Melbo
--
Albuquerque NM Bus Conversion 1978 MCI 1973 GMC
 
> The filter I took out was a NAPA Gold 1374 and like you mentioned it is recessed


For those of you experimenting with different size oil filters…especially smaller or recessed ones - please keep in mind that our air-cooled Onans have a pull-through cooling system (trade name “Onan Vacuflo”) as contrasted with more traditional push-through cooling systems. All of the openings between the generator and the engine as well as the oil filter opening must have sealing shims or grommets which eliminate suction leakage at those locations. The oil filter grommet is particularly critical to sealing its opening since that is the location closest to the vacuum source - the flywheel - and any leakage at that point will seriously compromise cooling effectiveness for the entire remainder of the engine and generator.

—Jim
Jim Miller
1977 Eleganza
1977 Royale
Hamilton, OH
 
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