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Old 06-22-2014, 12:12 PM   #1
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Oil for Genset

my genset is a power tech 8000 with kubota d1105 3-cylinder engine. according to user's manual, the oil must meet API CC/CD/CE but those are obsolete. It also said to use sae30 or 10W30 or 10W40.

knowing it burns diesel fuel, i drop 10w40 out of the list as it is not designed for diesel engines (?). sae30 is a conventional and 10w30 (delo 400xle) is a syn blend. am i right to use 10w30 for it? appreciate your advice.
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Old 06-22-2014, 12:29 PM   #2
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Personally ; I'd think that the 10w40 would be a miss-print , maybe should be 15w40, also in hotter climates 10w30 ;even those rated for diesel use; would be questionable for long term ( continuous ) use.
If your in a situation where you wouldn't be starting the gen set at temps below 40f, I'd use 15w40.

EDIT: Second thought; I always have second thoughts.
My Onan manual , 7500w 3 cylinder diesel ( no maker brand ) lists a host of oil viscosities, 30w , 10/30 etc. & 15w40 for temps from 10f to 100f+
10w30& 10w40 are listed , from 0f to 100 f, tops.
JMHO: 15w40 same oil as the chassis engine.
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Old 06-22-2014, 02:03 PM   #3
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thanks skip. i definitely wouldn't start genset below than 80f. i thought the same way that 15w40 would be better suited... let's wait and hear from others what they are using...
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Old 06-22-2014, 03:56 PM   #4
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I use Shell Rotella T =(Diesel Oil), 15W40 in my 8kw Gen. (just as recommended)
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Old 06-22-2014, 04:09 PM   #5
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Quote:
Originally Posted by siggyd View Post
I use Shell Rotella T =(Diesel Oil), 15W40 in my 8kw Gen. (just as recommended)

Siggy

Use it gen and engine. Easy to find everywhere.
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Old 06-22-2014, 05:28 PM   #6
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Quote:
Originally Posted by siggyd View Post
I use Shell Rotella T =(Diesel Oil), 15W40 in my 8kw Gen. (just as recommended)
Siggy
Same here. The diesel gen gets the same oil as the Cummins.
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Old 06-22-2014, 05:43 PM   #7
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My Powertech 8kw gets the same Rotella 15w40 as the Cat.
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Old 06-22-2014, 06:35 PM   #8
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I use rotella 15W40 in engine and genset.
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Old 06-22-2014, 08:59 PM   #9
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I wouldn't overthink it. Like the others here, I use the same as the coach diesel. Makes shopping & storage easier.
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Old 06-22-2014, 11:43 PM   #10
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thank you all for your comments. the consensus is 15w40, wow, that makes life easier - i don't need to remember which oil is for which...
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