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What is the best oil to use for a 24kw generac home generator?

Posted on 9/9/24 at 10:51 pm
Posted by poolplayah
Member since Aug 2023
72 posts
Posted on 9/9/24 at 10:51 pm
Conventional 10w30 or SAE 10w30

Any brand is better than others?

TIA
Posted by Notro
Alison Brie's Boobs
Member since Sep 2011
7912 posts
Posted on 9/9/24 at 11:04 pm to
Posted by jake wade
North LA
Member since Oct 2007
2132 posts
Posted on 9/10/24 at 4:35 am to
Amsoil 5w30 synthetic small engine oil would be a great choice after break in.
This post was edited on 9/10/24 at 4:38 am
Posted by GoAwayImBaitn
On an island in the marsh
Member since Jul 2018
2621 posts
Posted on 9/10/24 at 6:40 am to
quote:

Amsoil 5w30 synthetic small engine oil would be a great choice after break in.


I'd rather a 10w-30 in an air cooled engine if using a multi weight. The greater the difference in the oil's multi weight index, the more prone it is to shearing under heat.

We aren't in cold weather, so no benefit to using 5w30 oil.

ETA typo
This post was edited on 9/10/24 at 6:41 am
Posted by LSUfootball222
Member since Oct 2009
1164 posts
Posted on 9/10/24 at 8:25 am to
Do you really need to change the oil every 8 hours
Posted by TheBoo
South to Louisiana
Member since Aug 2012
5091 posts
Posted on 9/10/24 at 8:28 am to
quote:

Do you really need to change the oil every 8 hours

Posted by poochie
Houma, la
Member since Apr 2007
6763 posts
Posted on 9/10/24 at 9:10 am to
once a week when running, i believe. Also, crossreference filters. I picked up some fram filters and 5qts of 5w30 from walmarks yesterday in case i have to do a few oil changes.
Posted by GoAwayImBaitn
On an island in the marsh
Member since Jul 2018
2621 posts
Posted on 9/10/24 at 9:11 am to
quote:

Do you really need to change the oil every 8 hours


No. I'd change it about every 3 days if its continuous use running.
Posted by TheBoo
South to Louisiana
Member since Aug 2012
5091 posts
Posted on 9/10/24 at 9:24 am to
On natural gas recommended OCI is 100 hours, so a little over 4 days. I've been told by mechanics who work on NG engines for a living that realistically with proper service and quality filter / oil you can push that to 200 hours if in a bind (I would never).

That said, Honda, Kohler, Generac, John Deere, etc.. all make full synthetic small engine oils with higher levels of zinc / ZDDP that can be purchased at Lowes or Home Depot. This is the best way to go. As an option B to this, I'd get motorcycle / atv oil.
Posted by Randall Savauge
Member since Aug 2021
319 posts
Posted on 9/10/24 at 9:42 am to
Where was this oil at loser, the boo? I went last night and didn’t see any.
Posted by TheBoo
South to Louisiana
Member since Aug 2012
5091 posts
Posted on 9/10/24 at 10:45 am to
Lowe's will typically carry Briggs and John Deere brand lawn mower oil. They may be out. Could try local hardware stores that sell or service lawn mowers as well.
Posted by Cypressknee
Member since Jul 2017
1406 posts
Posted on 9/10/24 at 10:54 am to
quote:

Amsoil 5w30 synthetic small engine oil


That’s what I use in my small engines. Generator is getting a fresh change today.
Posted by td1
Baton Rouge
Member since Oct 2015
3069 posts
Posted on 9/10/24 at 12:03 pm to
15-40 Diesel Oil
Posted by GEAUXT
Member since Nov 2007
30116 posts
Posted on 9/10/24 at 1:15 pm to
quote:

15-40 Diesel Oil


This is what I use
Posted by LSUfootball222
Member since Oct 2009
1164 posts
Posted on 9/10/24 at 2:12 pm to
I just had a 26kw whole home kohler installed. Dealer told me change oil every 8 hours if it’s running continuously. Is that just CYA? seems like overkill to me.
Posted by cgrand
HAMMOND
Member since Oct 2009
43076 posts
Posted on 9/10/24 at 2:19 pm to
after 1st 25 hrs then every 3 days
Posted by Antib551
Houma, LA
Member since Dec 2018
1260 posts
Posted on 9/10/24 at 6:45 pm to
EVERYTHING at my house gets Rotella 15w-40 except my wife's Suburban. My duramax, gatortail, outboards, generator, zero turn.

It's hot AF after a storm, and especially in an enclosure. Run the heavy shite and lubricate the crap out of those internals. That thin stuff breaks down too easy with the long hard hours.
Posted by LSUDUCKMAN67
DTB
Member since Sep 2020
1393 posts
Posted on 9/10/24 at 7:31 pm to
Yea I’m with you!!!

Diesel Oil, Ams-oil or Royal Purple
Posted by sleepytime
Member since Feb 2014
3739 posts
Posted on 9/11/24 at 7:26 pm to
Rotella T6 15-40. I use it in everything(mowers, 4 wheelers, tractors, OPE) except gas engine cars. It holds up very well to the hellish heat of a south LA summer.
My dad borrowed a generator, ran it non-stop for 12 or 13 days without changing the oil and the oil still had a little life left in it. That's like running a car 20 plus thousand hard miles without changing the oil.
Posted by LSUfootball222
Member since Oct 2009
1164 posts
Posted on 9/11/24 at 8:06 pm to
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