| [GMCnet] engine oil [message #301440] |
Thu, 02 June 2016 16:46  |
james Ernst
Messages: 79
Registered: December 2013
Location: Lincoln, NE
Karma: -4
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Member |
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Hello gang,
I know this has been discussed ad nauseum but while at Walmart last night
looking at engine oil I have a couple questions.
I picked up a gallon of Rotella T straight 30 for the Onan.
Then for the the coach I ran across Mobil 1 10-30 High mileage 5qt jug $22.
It has the extra wear and heat protection additives.
Also, Valvoline new 15-40 HD diesel now with 25% less wear based on cam
lobe wear. Apparently updated anti wear pkg. It is a semi synthetic.
14.95/gal.
I had been using Rotella T 15-40.
I know some of you use the Rotella semi synthetic and full synthetic too.
I was just thinking it's time to move to synthetic blend or full.
Any thoughts on both the oils for the Onan and 455 would be appreciated.
Thanks,
Jim Ernst
Columbus, NE
77 PB
77Kingsley
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Jimbalaya
No Coach yet
60 Olds 88
66 Toro
76 Toro
86 cutlass Supreme
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| Re: [GMCnet] engine oil [message #301447 is a reply to message #301440] |
Thu, 02 June 2016 17:53  |
jhbridges
Messages: 8412
Registered: May 2011
Location: Braselton ga
Karma: -74
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Senior Member |
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I've gotten in the habit of throwing synthetic in everything. 5W-20 in the Mouse and her minivan, 30W in the ratrod, and 15-40 in the GMCs. Change it every 5K miles along with the filters and forget about it. So far, nothing's lunched from oil problems.
--johnny
Foolish Carriage, 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
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| Re: [GMCnet] engine oil [message #301503 is a reply to message #301440] |
Fri, 03 June 2016 09:29 |
midlf
Messages: 2212
Registered: July 2007
Location: SE Wisc. (Palmyra)
Karma: 1
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Run the same oil in the Onan as you run in the engine. The Onan probably needs synth more than the engine.
Steve Southworth
1974 Glacier TZE064V100150 (for workin on)
1975 Transmode TZE365V100394 (parts & spares)
Palmyra WI
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| Re: [GMCnet] engine oil [message #301533 is a reply to message #301503] |
Fri, 03 June 2016 20:44 |
james Ernst
Messages: 79
Registered: December 2013
Location: Lincoln, NE
Karma: -4
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Member |
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Thanks Johnny and Steve for the input. I went ahead and put the straight 30
Rotella in the Onan for now and then replace with full synthetic. Our BG
rep came into the shop today and he had some of there BG 15-40 full
synthetic HD Diesel oil. They claim it's better than the equivalent
Rotella, so I'm giving that a try.
On Jun 3, 2016 9:30 AM, "Steve Southworth" wrote:
> Run the same oil in the Onan as you run in the engine. The Onan probably
> needs synth more than the engine.
> --
> Steve Southworth
> 1974 Glacier TZE064V100150 (for workin on)
> 1975 Transmode TZE365V100394 (parts & spares)
> Palmyra WI
>
> _______________________________________________
> GMCnet mailing list
> Unsubscribe or Change List Options:
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>
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Jimbalaya
No Coach yet
60 Olds 88
66 Toro
76 Toro
86 cutlass Supreme
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| Re: [GMCnet] engine oil [message #301540 is a reply to message #301440] |
Sat, 04 June 2016 00:03 |
Bob de Kruyff
Messages: 4260
Registered: January 2004
Location: Chandler, AZ
Karma: 1
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Senior Member |
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james Ernst wrote on Thu, 02 June 2016 15:46Hello gang,
I know this has been discussed ad nauseum but while at Walmart last night
looking at engine oil I have a couple questions.
I picked up a gallon of Rotella T straight 30 for the Onan.
Then for the the coach I ran across Mobil 1 10-30 High mileage 5qt jug $22.
It has the extra wear and heat protection additives.
Also, Valvoline new 15-40 HD diesel now with 25% less wear based on cam
lobe wear. Apparently updated anti wear pkg. It is a semi synthetic.
14.95/gal.
I had been using Rotella T 15-40.
I know some of you use the Rotella semi synthetic and full synthetic too.
I was just thinking it's time to move to synthetic blend or full.
Any thoughts on both the oils for the Onan and 455 would be appreciated.
Thanks,
Jim Ernst
Columbus, NE
77 PB
77Kingsley
_______________________________________________
GMCnet mailing list
Unsubscribe or Change List Options:
http://list.gmcnet.org/mailman/listinfo/gmclist_list.gmcnet.org
Jim--many people here over analyse the oil thing. Frankly any commercially available oil will work just great. Depending on where you will use it--pick the best viscosity. Other than that the rest is pure hype and marketing BS.
Bob de Kruyff
78 Eleganza
Chandler, AZ
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