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07-01-2012, 07:53 PM
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#1
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Winnebago Owner
Join Date: Aug 2011
Location: Bartlett, TN
Posts: 54
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Oil Weight for Onan GenSet
I have an Onan Marquis Gold 5500 Genset and was wondering what he best weight would be and quantity. 
__________________
 2003 Winne Adventurer, Ford F53 V-10. Toad:1992 S-10, Road Master Falcon 2 Tow bar, Blue Ox Patriot brake system and Protect-a-Tow. Right is right even if no one is doing it; Wrong is wrong even if everyone is doing it--St Augustine of Hippo. Navy AD.
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07-01-2012, 07:55 PM
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#2
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Winnebago Master
Join Date: Oct 2006
Location: Rochester NY
Posts: 813
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Quote:
Originally Posted by navychaps
I have an Onan Marquis Gold 5500 Genset and was wondering what he best weight would be and quantity. |
15W40. Check owner's manual for quantity of oil.
__________________
Don
'07 Winnebago Journey 34H - CAT C7, Koni's, MCU's, SS Bell Crank, Safe-T-Plus
'07 HHR Toad, SMI AFO, Blue OX
[SIGPIC][/SIGPIC]
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07-01-2012, 08:06 PM
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#3
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Winnie-Wise
Join Date: Apr 2011
Location: Powell River, B.C.
Posts: 339
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15/40 for the diesel version, but I take it from your profile your not .
Do you have , gas or propane ? 
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99DSDP 3884, Freightliner, XC, CAT 3126B, 300 HP /ALLISON 3060
2000 Caravan toad, Remco & Blue Ox.
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07-01-2012, 08:09 PM
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#4
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Winnebago Owner
Join Date: Aug 2011
Location: Bartlett, TN
Posts: 54
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Quote:
Originally Posted by Skip426
15/40 for the diesel version, but I take it from your profile your not .
Do you have , gas or propane ? |
Gas, Thanks
__________________
2003 Winne Adventurer, Ford F53 V-10. Toad:1992 S-10, Road Master Falcon 2 Tow bar, Blue Ox Patriot brake system and Protect-a-Tow. Right is right even if no one is doing it; Wrong is wrong even if everyone is doing it--St Augustine of Hippo. Navy AD.
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07-01-2012, 08:18 PM
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#5
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Winnebago Master
Join Date: Oct 2006
Location: Rochester NY
Posts: 813
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15W40 for all Onan's, gas, diesel, or LP.
__________________
Don
'07 Winnebago Journey 34H - CAT C7, Koni's, MCU's, SS Bell Crank, Safe-T-Plus
'07 HHR Toad, SMI AFO, Blue OX
[SIGPIC][/SIGPIC]
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07-01-2012, 08:27 PM
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#6
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Winnie-Wise
Join Date: Aug 2000
Location: Full Time, TX Home Base
Posts: 432
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Always best to check the owners manual for type and quantity.
Ken
__________________
Amateur Radio Operator (KE5DFR)|Full-Time! - 2012 6.7L Ford Crew Cab Dually -2013 HitchHiker Champagne 38RLRSB - Travel with one Standard Schnauzer and one small Timneh African Gray Parrot
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07-01-2012, 09:03 PM
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#7
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Winnebago Master
Join Date: May 2011
Location: Vancouver, WA
Posts: 560
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Your owner's manual says what?
__________________
2009 45' Magna 630 w/Cummins ISX 650 HP/1950 Lbs Ft
Charter Lifetime GS Member, SKP, FMCA,
RV'ing since 1957, NRA Benefactor Life, towing '14 CR-V
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07-01-2012, 09:05 PM
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#8
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Winnebago Owner
Join Date: Aug 2011
Location: Bartlett, TN
Posts: 54
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Quote:
Originally Posted by Mr_D
Your owner's manual says what?
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If I had it, would I be asking here? 
__________________
2003 Winne Adventurer, Ford F53 V-10. Toad:1992 S-10, Road Master Falcon 2 Tow bar, Blue Ox Patriot brake system and Protect-a-Tow. Right is right even if no one is doing it; Wrong is wrong even if everyone is doing it--St Augustine of Hippo. Navy AD.
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07-01-2012, 09:26 PM
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#9
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Winnebago Owner
Join Date: Aug 2009
Posts: 54
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Lots of helpful info one the Winnebago site. Here is a link to the owners manual:
http://www.winnebagoind.com/resource...Adventurer.pdf
__________________
Dean & Mary (Retired U.S.A.F.)
2012 Itasca Sunova 33C, 2012 Cadillac SRX w/Blue Ox setup & Brake Buddy THE EASIEST TOAD EVER HAD!!
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07-01-2012, 09:42 PM
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#10
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Winnebago Watcher
Join Date: Nov 2010
Location: Tucson, AZ
Posts: 1
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I have the same Onan and it will take 2 quarts of oil and I've been using Mobil1 15/40 in it...cheaper.
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2009 Cherokee Wolf Pack 285wp
2005 F-250 SD 4x4 Powerstroke
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07-02-2012, 04:24 AM
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#11
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Winnebago Master
Join Date: Sep 2007
Posts: 724
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you should change the oil filter too.
onan pn 122-0836
wix pn 57398
napa pn 7398
napa oil filter wrench pn 775-9018
my onan 5500 gold genny holds 2 qts with filter change, but i could not put it all in at first.
i filled it with amsoil synthetic 15-40, installed the oil filler cap, and ran the genny to check for leaks.
then i was able to install the balance of 2 qts.
__________________
01 WINNEBAGO 35U W20.8.1L SW Wa, Hi. Good Sam, SKP. AMSOIL fluids. BANKS ecm program. SCAN GAUGE II w/ Ally temp. 2 LIFELINE GPL-6CT AGM Batts on their sides. TST tptts. K&N panel air filter. AERO mufflers. TAYLOR plug wires. ULTRA POWER track bar. KONI fsd shocks, toad '14 smart car
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07-02-2012, 06:45 AM
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#12
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Winnebago Master
Join Date: Nov 2005
Posts: 1,080
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Quote:
Originally Posted by navychaps
If I had it, would I be asking here? |
You can download many of the Onan manuals and spec sheets from the Cummins/Onan website.
Cummins Onan
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Hikerdogs
2013 Adventurer 32H
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07-02-2012, 06:48 AM
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#13
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Winnie-Wise
Join Date: Aug 2000
Location: Full Time, TX Home Base
Posts: 432
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For reference, you can generally plug in the make and model number of just about anything in Google and find a service/operators manual. Find it and print out a copy for future reference.
Ken
__________________
Amateur Radio Operator (KE5DFR)|Full-Time! - 2012 6.7L Ford Crew Cab Dually -2013 HitchHiker Champagne 38RLRSB - Travel with one Standard Schnauzer and one small Timneh African Gray Parrot
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07-02-2012, 10:17 AM
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#14
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Winnebago Master
Join Date: Jun 2003
Location: Palisade CO
Posts: 895
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This is from the manual:
TABLE 1. OIL VISCOSITY VS. TEMPERATURE
EXPECTED AMBIENT.........................SAE VISCOSITY
TEMPERATURES...................................GRA DE
32° F (0° C) and higher..........................30
10° F to 100° F (-12° C to 38° C)........15W-40
..........(OnaMax™)
0° F to 80° F (-18° C to 27° C)............10W-30
.................................................. ..........10W-40
-20° F to 50° F (-28° C to 10° C).........5W-30
__________________
Clay WA5NMR - Ex Snowbird - 1 year, Ex Full timer for 11 years - 2004 Winnebago Sightseer 35N Workhorse chassis. Honda Accord toad.
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07-02-2012, 07:48 PM
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#15
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Registered User
Join Date: Apr 2012
Posts: 8
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I have the same generator and run Amsoil full chemical synthetic small engine SAE 30/10w30. Made for air cooled generators. 30 wt is more fuel efficient and I run it for day's at a time in Houston heat with no oil consumption or overheating.
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07-02-2012, 08:08 PM
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#16
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Winnebago Camper
Join Date: Apr 2012
Posts: 20
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I believe there is a tag on your air cleaner cover that tells you the oil & air filter # and the viscosity and amount of oil it takes.
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07-02-2012, 08:16 PM
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#17
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Winnebago Owner
Join Date: Aug 2011
Location: Bartlett, TN
Posts: 54
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Thanks all. I am working the oil change now!  
__________________
2003 Winne Adventurer, Ford F53 V-10. Toad:1992 S-10, Road Master Falcon 2 Tow bar, Blue Ox Patriot brake system and Protect-a-Tow. Right is right even if no one is doing it; Wrong is wrong even if everyone is doing it--St Augustine of Hippo. Navy AD.
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07-29-2013, 08:43 PM
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#18
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Winnebago Camper
Join Date: Apr 2011
Posts: 8
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Quote:
Originally Posted by DAN L
you should change the oil filter too.
onan pn 122-0836
wix pn 57398
napa pn 7398
napa oil filter wrench pn 775-9018
my onan 5500 gold genny holds 2 qts with filter change, but i could not put it all in at first.
i filled it with amsoil synthetic 15-40, installed the oil filler cap, and ran the genny to check for leaks.
then i was able to install the balance of 2 qts.
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I know this is a year old post, but thought I would ask anyway. Will the Onan filter wrench fit, say a WIX filter?
Thanks
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07-29-2013, 09:19 PM
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#19
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Winnebago Master
Join Date: Sep 2007
Posts: 724
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Quote:
Originally Posted by JacknKay
I know this is a year old post, but thought I would ask anyway. Will the Onan filter wrench fit, say a WIX filter?
Thanks
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the problem is that the onan oil filter end is recessed in the genny. therefor, i used a napa 3 finger adjustable oil filter wrench to remove it. it helps if you use a strong rubber band around the 3 fingers. my filter was very tight and difficult to remove. 
i don't know if the wix filter is the same length as the onan filter. if it is longer, it would be easier to remove and install. if it is shorter it would be a pita.
__________________
01 WINNEBAGO 35U W20.8.1L SW Wa, Hi. Good Sam, SKP. AMSOIL fluids. BANKS ecm program. SCAN GAUGE II w/ Ally temp. 2 LIFELINE GPL-6CT AGM Batts on their sides. TST tptts. K&N panel air filter. AERO mufflers. TAYLOR plug wires. ULTRA POWER track bar. KONI fsd shocks, toad '14 smart car
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07-29-2013, 09:40 PM
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#20
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Registered User
Join Date: Mar 2013
Posts: 23
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Quote:
Originally Posted by DAN L
the problem is that the onan oil filter end is recessed in the genny. therefor, i used a napa 3 finger adjustable oil filter wrench to remove it. it helps if you use a strong rubber band around the 3 fingers. my filter was very tight and difficult to remove.
i don't know if the wix filter is the same length as the onan filter. if it is longer, it would be easier to remove and install. if it is shorter it would be a pita. |
When I purchased my motorhome the generator had a Fram oil filter. This filter stuck out a few inchs making it easy to remove and install. Im a OEM kind of person so when I bought the cummins filter it was flush. Fortunately the oil change guys has a filter socket that fits over the end of the filter to install it.
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