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Honda generator oil. #5381258 03/20/20 01:40 PM
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JustinSL Offline OP
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Recently traded into a Honda EU2000i generator. Seems to run good on high idle but surges some on eco mode. I’m going to take the carb off and clean it , change the oil , spark plug and check over everything while I have it tore down. Looks like it calls for 10w-30 so I will probably stick with that and a 20 hour oci since I won’t be using it a ton. What are you guys running as far as oil and weight?

Re: Honda generator oil. [Re: JustinSL] #5381263 03/20/20 01:44 PM
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c502cid Offline
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My 3 aren't picky at all, whatever I have is what they get. Make sure after you shut it down you use the bowl drain in the bottom of the carb. It's a great feature to keep them from getting gummed up.



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Re: Honda generator oil. [Re: JustinSL] #5381265 03/20/20 01:48 PM
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Lenny5160 Offline
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I have the Yamaha equivalent 2000w inverter generator, and it usually gets Supertech HD30.

Re: Honda generator oil. [Re: JustinSL] #5381276 03/20/20 01:58 PM
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spasm3 Offline
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Amsoil HDD 5w-30


13 elantra 81k 5w30 synpwr
03 chevy avalanche 83k synpwr 5w30
17 mazda cx-5 17000 miles synpwr 5w30
Re: Honda generator oil. [Re: c502cid] #5381278 03/20/20 01:59 PM
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JustinSL Offline OP
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I didn’t think it would be too picky as far as oil goes. Luckily I can get Ethenol Free gas close by and will be running that with PRI-G fuel additive as well. Luckily that’s how I got it was because the carb needs cleaned and the previous owner didn’t want to mess with it.

Re: Honda generator oil. [Re: JustinSL] #5381309 03/20/20 02:23 PM
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Lubener Offline
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10W-30 is what I use in my generator. Ok for all seasons.


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Re: Honda generator oil. [Re: JustinSL] #5381352 03/20/20 03:06 PM
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Cujet Offline
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I use M1, 10W-30 in my EU2000i. That little generator has been working perfectly for years, through multiple hurricanes and other emergencies.

Last edited by Cujet; 03/20/20 03:06 PM.

People who count on their fingers should maintain a discreet silence.
Re: Honda generator oil. [Re: JustinSL] #5381394 03/20/20 04:06 PM
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Lawn_Care Offline
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Super Tech 15w40 or Harvest King 15w40. 5w40 in the winter.
Air cooled engines run hot, and a 40 is much better suited for these.
Having been involved in Katrina cleanup, many gen sets running 30's failed in the hot humid NO weather running continuously.
Those running a 40-wt had a much lower failure rate.

Re: Honda generator oil. [Re: JustinSL] #5381429 03/20/20 04:45 PM
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JTK Offline
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I think Honda does a pretty nice job designing these to run as cool as possible, so any old 30wt variant changed at a reasonable interval will keep it running for a long time. Regardless, If I have a heavy-duty 40wt variant on hand, that's what I'd use in any OPE aside from a snowblower.


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Re: Honda generator oil. [Re: JustinSL] #5381437 03/20/20 04:49 PM
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Oildudeny Offline
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My champion generator calls for 10w30 and I dont believe your Honda is picky on the brand of 10w30. Just use a quality oil, 20hr change intervals go with conventional unless you buy a 5qt jug of super tech. I personally use super tech or napa

Once you clean the carb.. use 93 octane with stable or Chevron with techron to keep the gas fresh.

Last edited by Oildudeny; 03/20/20 04:51 PM.
Re: Honda generator oil. [Re: JustinSL] #5381466 03/20/20 05:24 PM
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Astro_Guy Offline
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I like Mobil 1 10w-30 High Mileage for the 3.5 HTHS. Presently both of my generators have Rotella T6 5w-40 in the sump, but I may switch back to the Mobil 1.

Re: Honda generator oil. [Re: JustinSL] #5382391 03/21/20 08:18 PM
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spasm3 Offline
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I run the amsoil HDD because it has the HTHS of 3.5. And since it sits a lot between running, i like the tbn of 12.1


13 elantra 81k 5w30 synpwr
03 chevy avalanche 83k synpwr 5w30
17 mazda cx-5 17000 miles synpwr 5w30
Re: Honda generator oil. [Re: JustinSL] #5382431 03/21/20 09:08 PM
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Normac Offline
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A 2nd the above comments about running a 40-wt in these small air cooled engines.
I've seen to many of these things overheat running thinner oils in near continuous operations.

Re: Honda generator oil. [Re: JustinSL] #5387289 03/27/20 07:22 PM
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JustinSL Offline OP
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Ended up going with PYB 10w-40 for those that are interested.

Re: Honda generator oil. [Re: JustinSL] #5388622 03/29/20 12:24 PM
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charles_slc Offline
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I'm looking at a Westinghouse 4500 dual-fuel inverter, the manual specifies 10w-30 between 32f - 80f and 5w-30 below / 15w-40 above that range.

That seems to be a very narrow/specific range.

I'm planning to use it camping and also for emergencies at home (house already wired with a transfer switch with 30amp input).

So I foresee it being used anywhere between 0-110f.

Seems like a nice synthetic should cover that range, but I'm a software guy...not an oil guy.

If I really need to switch, could I get away with 5W-30 in the winter and 10W-40 in the summer or some other combination?

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