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06-07-2009, 02:40 PM
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#1
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Winnebago Owner
Join Date: Oct 2002
Posts: 137
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What oil do you use in your gas Genset?
What oil is everyone using in their gas generators. I currently use shell rotella 5W-40 synthetic and interested to see what others are using and why.
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Greg & Lynn (Full-Timing)
2011 Phaeton 42 QBH / Spartan Chassis
2003 Jeep GC Overland in Tow
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06-07-2009, 06:31 PM
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#2
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Winnie-Wise
Join Date: Jan 2005
Location: south NJ
Posts: 423
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I have been using 15W-40 but the last time I used 5W-30 and now it seems to leak a bit more. I'll go back to the thicker oil before it gets to hot.
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2001 32-V Suncruiser,Ford V-10, 310 HP, 4 Koni FSD's, KVH Tracvision,trickle charge, awning travel lock, 1 dinning room slide; no roof leaks, 03malibu toad sometimes, Blackhawk all terrain towbar, Roadmaster brake Pro,1 wife,1 westy, life is good!
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06-07-2009, 07:21 PM
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#3
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Winnebago Owner
Join Date: Oct 2002
Posts: 137
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Quote:
Originally Posted by bobpie
I have been using 15W-40 but the last time I used 5W-30 and now it seems to leak a bit more. I'll go back to the thicker oil before it gets to hot.
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That's interesting. I haven't had any leaks in my genset, and have had very good results with the 5W-40. I know that some have used Mobil 1 10W-30, maybe one of those folks will chime in. I am looking at going to it in my chassis engine. It would be nice to be able to use the same oil for both applications.
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Greg & Lynn (Full-Timing)
2011 Phaeton 42 QBH / Spartan Chassis
2003 Jeep GC Overland in Tow
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06-07-2009, 07:40 PM
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#4
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Winnebago Master
Join Date: Dec 2005
Location: Buxton, North Dakota
Posts: 1,037
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I use Onan 15W-40 #326-5336 most of the year and Onan SAE-30 #326-5339 during very hot weather.
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2003 Winnebago Adventurer 38G F53/ V10 605 watts of Solar
1999 Winnebago Brave 35C Handicap Equipped
F53/V10
1999 Jeep Cherokee & 1991 Jeep Wrangler Renegade
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06-07-2009, 10:42 PM
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#5
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Winnebago Owner
Join Date: Nov 2005
Posts: 146
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I've used 10W-30 Mobil 1 synthetic since purchasing the motorhome in 2004. I like synthetic because it's great for cold weather starts and it gives me a little more slack in terms of oil and filter change intervals. I don't have to add any make-up oil so leakage or burning isn't an issue.
Jack
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2004 Winnebago Brave 34D with the usual add-ons
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06-07-2009, 10:52 PM
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#6
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Winnebago Camper
Join Date: Jun 2008
Location: Glendora Ca.
Posts: 34
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Mobile 1 10w-30 in gen and 8.1 engine. No leaks or oil burning in either,
Mike
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2004 Monaco Monarch
Blueox, SMI, 1990 Wrangler YJ
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06-07-2009, 11:13 PM
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#7
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Winnebago Camper
Join Date: Jul 2000
Location: Las Vegas, NV
Posts: 39
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Been using Mobil 1 Synthetic 5w30 in v10 engine now for several years and straight 30w non-synthetic in Onan 5.5 genset. Next genset oil change will probably go with same weight Mobil 1
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Jim & SherrySeward
2000 Residency 3790 v10 w/tags 5 Star tune & Banks system Suzuki XL7 toad
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06-07-2009, 11:58 PM
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#8
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Winnebago Master
Join Date: Oct 2004
Posts: 629
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I have use 5-30 Mobil 1 all around may need Gen set start in cold of winter for power outage.
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06-08-2009, 02:50 AM
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#9
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Winnebago Master
Join Date: Sep 2007
Posts: 724
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Quote:
Originally Posted by FDchief
What oil is everyone using in their gas generators. I currently use shell rotella 5W-40 synthetic and interested to see what others are using and why.
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i am using AMSOIL 5w30 series 3000 SYNTHETIC oil in my engine, and AMSOIL 10w40 synthetic oil in my genny.
the "why" is that AMSOIL is the best oil made. better fuel economy, power, and engine life are some of the AMSOIL'S attributes. AMSOIL is one of the few fully synthetic oils manufactured.
most "synthetic" oils are extra refined petroleum based oils. CASTROL started that mess and when sued by the API got a judge to agree with them. so now just about all the oil manufacturers have a non-synthetic "synthetic" oil. mobile 1 has both. you have to read the can closely to tell what you are buying.
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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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06-08-2009, 06:41 AM
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#10
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Winnebago Master
Join Date: Dec 2003
Location: Weyauwega, WI US
Posts: 1,486
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Quote:
Originally Posted by FDchief
What oil is everyone using in their gas generators. I currently use shell rotella 5W-40 synthetic and interested to see what others are using and why.
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I follow the recommendations in my Onan manual. For my climate I use 15W40.
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Don & Bev Morgan Weyauwega WI, 05 Itasca Horizon 40KD, 400 HP Cummins, Delorme GPS LT 40, Toad 07 Saturn Vue AWD, Air Force One, TST 510 TPMS, Mayor of Weyauwega 2007 - 2013, Waupaca Co Board Supervisor 2010 - 2014
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06-08-2009, 02:59 PM
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#11
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Winnebago Owner
Join Date: Dec 2006
Location: Indianapolis Indiana
Posts: 124
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Quote:
Originally Posted by Petro
I follow the recommendations in my Onan manual. For my climate I use 15W40.
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Me too, I use the Onan brand, it doesn't take that much and I believe it is worth the cost.
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2007 Itasca Sunrise 35L W22 Chassis TigerTrak ScanGaugeII
Blue Ox tow bar - Brake Buddy
2013 Equinox
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06-08-2009, 04:05 PM
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#12
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Winnie-Wise
Join Date: Dec 2003
Location: Mo/Texas
Posts: 318
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10w-30 Dino oil in the coach and Rotella 15w-40 in the Onan gennie.
Both are changed yearly or sooner if the mileage/hrs require it.
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04 Newmar DSDP 4015-Cummins ISL 370hp-Spartan MM Chassis-2013 Chev Equinox AWD-Ready Brute Elite Towing System-FMCA 402879-SKP 120487 [SIGPIC][/SIGPIC]
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06-08-2009, 07:53 PM
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#13
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Winnebago Owner
Join Date: Oct 2002
Posts: 137
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Good input from all. I will be switching my motorhome oil from Mobil 1 5W-30 to Mobil 1 10W-30 for warm weather ops. I may do this also on the generator to keep it simple by using the same oil in everything, even my tow car.
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Greg & Lynn (Full-Timing)
2011 Phaeton 42 QBH / Spartan Chassis
2003 Jeep GC Overland in Tow
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06-08-2009, 09:27 PM
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#14
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Winnebago Owner
Join Date: Oct 2007
Posts: 124
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Rotella 15W-40.
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2009 Winnebago Sightseer 35J
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06-15-2009, 08:52 AM
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#15
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Winnebago Owner
Join Date: Sep 2006
Location: SE Minnesota
Posts: 228
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I use Rotella 15 w 40 also.
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06 TS-42-DS04
1040 watts of solar
2014 Jeep Rubicon/2003 Honda CRV
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