Onan Oil

[john szalay]

>
>Does that mean we shouldn't use 10w-40 ? Why Not ?? When I used 10w 40 in my
>newly installed 6kw (300 hrs) I used 1 Qt in 43 hrs; When I changed to
30w, I
>started
>to use oil excessively. Why ?
>

Afraid you'll have to ask an Onan engineer, I've owned 2 different models
of Onan gensets and both manuals state, use SAE-30 Non-detergent only.

 

[john szalay]

>Does that mean we shouldn't use 10w-40 ? Why Not ?? When I used 10w 40 in my
>newly installed 6kw (300 hrs) I used 1 Qt in 43 hrs; When I changed to
30w, I
>started
>to use oil excessively. Why ?

I stand corrected, my Onan manual stated SAE-30

But after checking the site http://www.onanrv.com/faq/index.html

FAQ they state this...
- ----------------------------------------------------------------------------
- ----
Q
Should I use straight 30-weight oil or is the multi-viscosity oil I use
in my
vehicle okay?
A
For best GenSet performance, Onan recommends you use OnaMax, the oil
Onan specifically formulated for RV GenSet. However, you can use the same
oil you use in your vehicle engine provided it meets or exceeds SG/CE API
specifications. To get you off to a good start, all new Onan GenSets are
factory
prepared with OnaMax 15W40 oil.

- ----------------------------------------------------------------------------
- ------

OH, that crow tastes good .............

 

[john szalay]

>In a message dated 6/25/00 7:27:09 PM Mountain Daylight Time,

>
>> I've owned 2 different models
>> of Onan gensets and both manuals state, use SAE-30 Non-detergent only.
>>
>
>John,
> SAE-30, Si! Non-detergent No! The GMC Maintennance Manual calls for
>"...good quality motor oil with the designation SE/CC." in your Onan.

The manual that came with the ONAN specs SAE 30-API/SF for normal use
and use multi-grade oil, only if you expect a wide range of operating
conditions, cold-hot ETC: However use of multi-grade may result in higher
rate of oil consumption.
however. on the Tag that came wired to the oil filer cap. on the ONAN itself
recommends SAE-30 Non-detergent.

so what do we do ? my Onan is a Emerald 4. BGE

 

[bob mclaughlin]

John,
DAYP(Do as you please). There are a lot of people using synthetic oil in
their Onan. I've used 20-50 for 800 hours and the Onan is working better
than ever. The only bad oil nowadays is no oil.
Bob McLaughlin

- -----Original Message-----
From: owner-gmcmotorhome
[mailtowner-gmcmotorhome]On Behalf Of John Szalay
Sent: Monday, June 26, 2000 5:26 PM
To: gmcmotorhome
Subject: Re: GMC: Onan Oil

>In a message dated 6/25/00 7:27:09 PM Mountain Daylight Time,

>
>> I've owned 2 different models
>> of Onan gensets and both manuals state, use SAE-30 Non-detergent
only.
>>
>
>John,
> SAE-30, Si! Non-detergent No! The GMC Maintennance Manual calls for
>"...good quality motor oil with the designation SE/CC." in your Onan.

The manual that came with the ONAN specs SAE 30-API/SF for normal use
and use multi-grade oil, only if you expect a wide range of operating
conditions, cold-hot ETC: However use of multi-grade may result in higher
rate of oil consumption.
however. on the Tag that came wired to the oil filer cap. on the ONAN
itself
recommends SAE-30 Non-detergent.

so what do we do ? my Onan is a Emerald 4. BGE