onan generator synthetic oil filter

amerkanch wrote:
I have a onan 5500 generator, model #5.5HGJAB-1038K.I am trying to get a part # for a synthetic oil filter so that I can run mobil 1 synthetic oil in my generator. Im hoping someone has already found a good part# and can share that with me. not having any luck with cross referances.

For what it's worth, Cummins/Onan themselves don't recommend synthetic oil:

Cummins does not recommend the use of Synthetic oil in Onan RV generators as there are no long-term benefits for the additional cost.

I did not know there were "synthetic oil filters". I just use regular oil filters in my vehicles while using synthetic oil.

Now I'm off to go look that up!

Tvov wrote:
I did not know there were "synthetic oil filters". I just use regular oil filters in my vehicles while using synthetic oil.

Now I'm off to go look that up!

Synthetic filter media VS cellulose is a BIG difference. Donaldson is a good source for top quality filters. They make filters for AMZ/OIL.

From the link above.

"Cummins does not recommend the use of Synthetic oil in Onan RV generators as there are no long-term benefits for the additional cost."

I ran Rotella 15-40 in my 6500 LP Cummins gen and since changed to AMZ/OIL "NON LE" Diesel and Marine 15-40. NOT going to hurt a darn thing.

I would look at the specs for the Cummins oil filter. Good chance it's made by their filtration Company FleetGuard. It may have synthetic filter media in it. If so it's probably their Stratapore media.

As hot as air cooled engines run, especially those inside a sound deadening enclosure, I will never understand the hesitation or reluctance to recommend synthetic oils. They’re not even that much more expensive anymore if you shop wisely.

:):)

Any filter works fine with synthetic oil.

NRALIFR wrote:
As hot as air cooled engines run, especially those inside a sound deadening enclosure, I will never understand the hesitation or reluctance to recommend synthetic oils. They’re not even that much more expensive anymore if you shop wisely.

:):)

So true!!!

NRALIFR wrote:
As hot as air cooled engines run, especially those inside a sound deadening enclosure, I will never understand the hesitation or reluctance to recommend synthetic oils. They’re not even that much more expensive anymore if you shop wisely.

:):)

I used synthetic oil in my Onan, for just those reasons.

fj12ryder wrote:

NRALIFR wrote:
As hot as air cooled engines run, especially those inside a sound deadening enclosure, I will never understand the hesitation or reluctance to recommend synthetic oils. They’re not even that much more expensive anymore if you shop wisely.

:):)

I used synthetic oil in my Onan, for just those reasons.

Kinda like using Synthetic in an air cooled Harley. Simply makes sense.