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Discussion Starter · #1 · (Edited)
Hello, I just bought the Champion model #200973 3650-Watt Dual Fuel Generator and I'm wondering about the oil. Initially I had thought about going with a synthetic oil due to a slightly wider temperature operation range and I posed a question to Champion support with that in mind, which by the way they have fantastic support I'll post their response below. I since have changed my mind (I think) and will probably just stick to a standard 10W-30. I haven't put the oil that came with it in yet and I'm wondering if I shouldn't buy a different oil, a "better" oil? Maybe something from Castrol that I could leave in instead of flushing after the break in period just to go synthetic. I'm new to this and unsure what would be the best. Any suggestions?

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During the initial five-hour break-in period, we recommend using standard 10W-30. This type of oil makes it easier to seat the rings of the piston. Once the break-in period has been completed, be sure to flush the oil. You can then use the 5W-30 synthetic oil thereafter.

During the break in period stay at or below 50% of the running watt rating and vary the load occasionally to allow stator windings to heat and cool. As with all new engines, the piston rings and cylinder need to be broken in. This is important for the newly manufactured cylinder wall and rings to seat themselves.

It is not necessary to run the generator for five hours straight to do the break-in period. The generator can run for five hours over any period up until they reach those five hours.



 

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Use the oil that came with the generator. Put a medium load on it. You’re going to want to change it out at about the 5 hour mark due to the break-in material that accumulates in that first oil. Then change to a premium oil if you want to. Look for a small engine oil or a motorcycle oil in the viscosity recommended by Champion. I like the Amsoil Synthetic Small Engine Oil in 10w30 myself… And look for a magnetic drain plug on the internet. I like the Goldplug for my small engines, mostly Hondas here at home. Store your generator with no-E gas and stabilizer…😬
 

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Not sure where you see it at $25…. No ethanol and gas stabilizer so that you reduce the chances of any gunk in the carburetor during storage. All kinds of threads on this forum. Good throne-room reading….
 

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The topic of engine oil seems to be quite personal. Ask 10 different people and you'll get 10 different answers. The Amsoil is popular and a solid choice. In my area of the country, I've had good luck using diesel oil. My favorite is Chevron Delo 5w40 synthetic. I use Rotella T6 as well. That might be a bit heavy for colder climates. Diesel oil is getting very hard to come by. There are now lots of shortages and it's gotten extremely expensive. Whatever you settle on, you might want to pick up a supply to last a while. Other oils may also become scarce as supply issue continue to worsen.
 

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The topic of engine oil seems to be quite personal. Ask 10 different people and you'll get 10 different answers. The Amsoil is popular and a solid choice. In my area of the country, I've had good luck using diesel oil. My favorite is Chevron Delo 5w40 synthetic. I use Rotella T6 as well. That might be a bit heavy for colder climates. Diesel oil is getting very hard to come by. There are now lots of shortages and it's gotten extremely expensive. Whatever you settle on, you might want to pick up a supply to last a while. Other oils may also become scarce as supply issue continue to worsen.
Its real hard to get rotella right now.
Hello, I just bought the Champion model #200973 3650-Watt Dual Fuel Generator and I'm wondering about the oil. Initially I had thought about going with a synthetic oil due to a slightly wider temperature operation range and I posed a question to Champion support with that in mind, which by the way they have fantastic support I'll post their response below. I since have changed my mind (I think) and will probably just stick to a standard 10W-30. I haven't put the oil that came with it in yet and I'm wondering if I shouldn't buy a different oil, a "better" oil? Maybe something from Castrol that I could leave in instead of flushing after the break in period just to go synthetic. I'm new to this and unsure what would be the best. Any suggestions?

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During the initial five-hour break-in period, we recommend using standard 10W-30. This type of oil makes it easier to seat the rings of the piston. Once the break-in period has been completed, be sure to flush the oil. You can then use the 5W-30 synthetic oil thereafter.

During the break in period stay at or below 50% of the running watt rating and vary the load occasionally to allow stator windings to heat and cool. As with all new engines, the piston rings and cylinder need to be broken in. This is important for the newly manufactured cylinder wall and rings to seat themselves.

It is not necessary to run the generator for five hours straight to do the break-in period. The generator can run for five hours over any period up until they reach those five hours.



Climate and ambient temps is important for engine weight.
Where do you live? What’s the climate like, what Season on the year do you have most of your power outages?

Brand and formulation is very personal for people. But the straight forward answer is a small engine oil specifically designed for power equipment is clearly the ”right“ choice in the long run. For break in simply by a conventional 10w30 and change it after running moderate load for a few hours.

I do 70% the rated load for 7 hours to make it simple.
 

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Discussion Starter · #11 ·
I live in Georgia. I settled on the Amsoil Synthetic Small Engine Oil 5w30 and ordered 2 quarts online. The generator only holds .6 quarts so that will be enough for 1 fill and 2 changes. The manual states a change is needed after 50 hours under a heavy load or after 100 hours/annually.

I don't get lengthy power outakes very often here but I bought it just to have a backup (mainly for the refrigerator), just in case.

I assume since there is no oil filter, swapping from standard to synthetic oil is just a matter of draining the oil and then refilling it with synthetic.
 

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Well you paid less than the silly Amazon price, but now that you know what you have….keep an eye for some retailers that might sell it. Here in Canada some TSC stores carry it. My preference would’ve been the 10w30, but not a big deal. Seems Champion likes the 5w…
 

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I run synthetic in my Yamaha MZ300 powering my generator. Given that I change the oil every year (or 50 hours, which hasn't happened in less than a year) I don't think it really matters.

1. Keep enough oil in it.
2. Change it frequently. Even with low hours it will accumulate moisture.
3. Appropriate weight oil for the ambient temp.

Those 3 things are far more important than brand or type of oil you use. Every engine will have a minimum oil rating it needs. Follow that and you should be fine.

I've had to run my generator at 20 degrees F and at 110 degrees. I made sure it had appropriate an appropriate weight oil in both cases.

imo if you use any decent oil, change it when you should, and do other routine maintenance (like valve adjustment), the power head is likely to have a major issue long before engine does.
 

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Discussion Starter · #20 · (Edited)
We’ll you paid less than the silly Amazon price, but now that you know what you have….keep an eye for some retailers that might sell it. Here in Canada some TSC stores carry it. My preference would’ve been the 10w30, but not a big deal. Seems Champion likes the 5w…
Yeah I'm sticking the the manufacturer recommendations of 5W-30 Synthetic. In addition to the graph above the manual states:

"Synthetic oil may be used after the 5 hour initial break-in period. Using synthetic oil does not decrease the recommended oil change interval. Full synthetic 5W-30 oil will aid in starting in cold ambient < 41º F (5º C) temperatures."

I'll have some extra oil and a backup recommended NGK (7133) BPR6ES-11 Spark Plug set away just in case.

I do plan to due my first oil change sooner than recommended to be sure everything is clean internally. I'll probably stick with standard oil until that 2nd change before going to 5W-30 synthetic. Maybe after 15-20 hours usage and then go to the recommended schedule.
 
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