Post your latest small engine oil change

[BlakeB]

Genmax GM7500iAED generator with 1.4 hours on it. This is the first oil change on this brand new generator. There was a good bit of glitter in the oil, I’ll be doing several more short oil changes with the 10w30 Supertech I bought for it. After I feel like it’s well broken in I may put some Rotella T6 5w40 or T4 15w40 in it. It only holds about 28oz of oil.

Out: The 10w30 oil it came with in the box.
In: Conventional Supertech 10w30.
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I put about 2 hours on my new generator from Sam’s Club tonight. It’s an A-ipower XOS2300i, I caught it on sale at Sam’s for $350, they have them in store all the time for $399. It’s actually way quieter than I thought it would be, it’s not Honda quite but it’s not as loud as the generac ix2000 that it’s replacing. The inverter failed recently on my Generac after 12 years of service. The new generator has an 80cc engine, I assume it’s an MZ80 clone. I used the oil that’s included with the generator and ran it for right at 2 hours recharging my Bluetti power station. The Bluetti will let you select the AC input amperage, so I varied the load between 3 and 7 amps. The A-ipower says not to exceed 50% load for the first 5 hours of operation. They consider 5 hours to be the break-in period. It calls for an oil change at 5 hours, 25 hours and then every 100 hours thereafter. I sucked out the oil with my oil extractor and poured the new in, mess free. I’ll change the oil again at 5 hours and then probably every 25 hours or annually thereafter. An annual oil change should take care of it, except in the event of a prolonged power outage. The Bluetti should run my refrigerator for about 24 hours on a charge and can be recharged by a generator in about an hour and a half. The Bluetti (Elite 200 V2) should help make my gas go a lot further during a power outage and help reduce the maintenance/wear and tear on the generator.

Out: 10w30 break-in oil (factory supplied)
In: ~12oz of Supertech 10w30 conventional
View attachment 275059

Changed the Genmax oil again at 7.4 hours, Supertech 10w30. Also changed the oil in the A-Ipower at 6 hours with 10w30 Supertech.

I hooked the Genmax up to the house 50 amp inlet and let it run from 4.6 hours to 7.4 hours. It ran my 4 ton inverter A/C without issue. I was also able to run my clothes dryer on low heat. I’m going to try to run both generators up to at least 25 hours and get them mostly broken in before it gets too cold.

 

[mobilnissan1991]

Friends brand new Predator 2500 inverter, he wanted me to break it in

Oiled the air filter, put in 12 oz of Master Pro 10W40 motorcycle oil, took the spark arrester out and it went in the trash and ran it for 6 hrs on a light load with the Torch plug it came with. Noticed it would miss sometimes and when shutting off would backfire.

Drained the oil after 6 hrs, refilled with the same oil and put in an NGK 6535 plug. No more miss or backfire when shutting off. Good to go. Ran it another 6 hrs

 

[12-Valve]

Scag Cheetah, hydro gear ZT5400 transaxles service 334 Hours
Out: Kawasaki K tec 20w50 and hydro gear filters
In: Mobil 1 V Twin 20w50 and hydro gear filters
Got all the oil back in the summer when it was on sale at napa, takes right at 10 quarts to service both sides. Waiting on my oil and filters to show up to service the engine and put it away for the winter.

 

[johnD2]

Kubota Z412 Kawasaki FS651 , 305 hours. Out : Napa 20w50 , Luber Finer PH3656 , 50 hour oci.

In Kawasaki Full Synthetic 15w50 and Ecogard SE-1

 

[12-Valve]

Kubota GR2120 3 cylinder diesel, full service for a customer. Engine, Transmission, deck gear box, 2 fuel filters, grease and sharpen blades at 86 hours on the machine.
Engine: Out unknow with a Kubota filter. In: Rotella t4 15w40 with a Kubota filter.
Transmission: Out and in, Kubota super udt2 and Kubota filters, cleaned metal strainer.
Deck gear box: Out was what smelled like the super udt2 all through it was pretty much empty. Kubota dealership said to put 80w90 back in it so that's what it got. This is the second one of these that I have serviced that the deck gear box is pretty much empty on at low hours. Kubota dealership quoted him over $500 to do it and they were not going to change the transmission fluid at that price.

 

[TnT_M]

Changed the oil in my riding mower today. Its a John Deere LT150 with a Kohler 15hp engine. I last changed the oil in the spring of 2024.

Out: 2 quarts of Mystik JT-8 10w-30 and Purolator blue can
In : 2 quarts of Mystik JT-8 10w-30 and Super Tech ST3614

 

[Vexorg]

I serviced my Honda eu2000i this weekend. I got the dipstick and drain tube from the jungle store. Quite surprising how much junk it picked up.

 

[CleanSump]

Old Bolens push mower with 125cc Briggs engine.
16 ounces of bottle dribbling mix of Amsoil 10W-40 Diesel & Mobil 1 ESP 0W30, and topped with 2 ounces of HPL Supercar 0W-30.
If my rings coke, I'll come back and start a thread on which oil is best for my 10 year old mower.

 

[danielmid]

Winter prepping time started.

Harbor Freight Predator 2000w inverter generator, roughly 40 minutes total run time
Out: factory fill, pretty glittery and had some bronze to it. Also have one of those magnetic dipsticks (some stuff on it) and a drain tube, made it super easy to work on.
In: Amsoil Small Engine 5w-30 and NGK CR5HSB 6535, fresh Sta-bil gas
(no photo)

Honda snowblower
In: fresh Sta-bil gas, fired right up
Already in: Amsoil small engine 5w-30, NGK BPR6EIX 6637, 2 seasons

Ariens snowblower, used last year (1 season) before I put the hour meter on
Out: factory fill (or maybe service center fill) and Torch spark plug, oil looked decent
In: Amsoil Small Engine 5w-30 and NGK BPR5EIX 6597, fresh Sta-bil gas

 

[svtrit]

Honda push mower

Out: Valvoline Max-Life 10w-30
In: Valvoline Max-Life 10w-30

2 seasons on the oil.

 

[Astro_Guy]

Billy Goat leaf vacuum with Honda GSV-190 engine. Oil hasn't been changed in several years.

Out: 10w-30 Mobil1 High Mileage via topside extraction. Black as coal.
In: 16 ounces 10w-30 Mobil1 High Mileage. Worked the machine twenty minutes and repeated the process.

 

[53' Stude]

Billy Goat leaf vacuum with Honda GSV-190 engine. Oil hasn't been changed in several years.

Out: 10w-30 Mobil1 High Mileage via topside extraction. Black as coal.
In: 16 ounces 10w-30 Mobil1 High Mileage. Worked the machine twenty minutes and repeated the process.

View attachment 311344

Nice wheels on the car!

 

[Astro_Guy]

Nice wheels on the car!

https://www.tirerack.com/wheels/enkei-performance-j10-silver-w-machined-lip

 

[black thunder]

Wood splitter with a honda GX160.

drained out some kind of HDEO i believe, either 15w40 or 10w30.

Refilled with Resolute 10w40

 

[Astro_Guy]

Predator 3500 imverter generator. 79 total hours on the machine and 51 hours on the oil. I tried a topside extraction but didn't get much out. What did come out looked pretty good - amber in color. I will revisit this shortly with a full drain.

Out: 5w-40 RT6
In: Mobil 1 High Mileage 10w30

 

[Kira]

The J-D Kawasaki 22-24(?) hp. Did my brother-in-law maintain this darn tractor (X570) AT ALL?

Both Toro 20 oz. Briggs engines, sharpened and run 'til empty. The BEST fuel Winterizing treatment there is.

Everybody got 15W-40.

 

[volk06]

JD x590 185hrs
Out JD +50 II 10w-30 and am124525 filter
In Mobil Super syn 5w-30 (winter duty) and my last ST mp3614

 

[Panda87]

Predator 3500 imverter generator. 79 total hours on the machine and 51 hours on the oil. I tried a topside extraction but didn't get much out. What did come out looked pretty good - amber in color. I will revisit this shortly with a full drain.

Out: 5w-40 RT6
In: Mobil 1 High Mileage 10w30

I run a Powerhorse 3500w genny. Same body and engine as yours. I do 100hr intervals on mine and after the 3rd break in run of 8 hours each, the past two 100hr intervals I’ve done (only takes me two weekends coaching to hit that) come out pretty darn nice looking now. I’m debating doubling it to 200hrs on the runs just to save myself maintenance time. I’m not going to bother with an analysis on the oil at only .6qts per fill. What do you think? Edit: I meant to add that I’m nearly 300hrs on mine now.

I run what was leftover of HPL PCMO 5w-40 and Amsoil Euro 5w-40 that got mixed together in a single jug.

 

[Astro_Guy]

I run a Powerhorse 3500w genny. Same body and engine as yours. I do 100hr intervals on mine and after the 3rd break in run of 8 hours each, the past two 100hr intervals I’ve done (only takes me two weekends coaching to hit that) come out pretty darn nice looking now. I’m debating doubling it to 200hrs on the runs just to save myself maintenance time. I’m not going to bother with an analysis on the oil at only .6qts per fill. What do you think?

My use case is completely different as the generator just sits in the garage waiting for a power outage. It's taken over seven years to accumulate 79 hours of run time with most of that being exercise runs.

Personally I don't think that I would extend to 200 hours on any air cooled Chinese engine.

 

[Panda87]

My use case is completely different as the generator just sits in the garage waiting for a power outage. It's taken over seven years to accumulate 79 hours of run time with most of that being exercise runs.

Personally I don't think that I would extend to 200 hours on any air cooled Chinese engine.

Makes sense for the reticence to avoid 200hrs. I’ve hit 135 on an OCI due to the way time turned out coaching. The oil was still amber in color and drained cleanly. It’s the main reason I considered extending the OCI. I *should* analyze it, but the cost doesn’t really pan out.