george6488
My 22kw generator has been in service for 12 months and has logged just 10.1 hours run time.

Should I change the oil / filter based on time or hours?    Generac 22kw model# 7043; ser# 3002326842; bought from Ziller 01/31/2018 and put into service 03/15/2018.

I looked thru all the manuals but was unable to find my answer.

Thanks.
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BrianMartin
We do maintenance yearly no matter the hours. The oil gets very milky after a year with not many hours, best to change it out imo. 
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george6488
I will be making the change today. Thanks.
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george6488
Oil and filter change went well. The old oil was milky in color. Checked air filter and battery with no problems noticed. Polished the outside of the generator case and transfer switch so all is looking good. Note to self............run generator manually for 20 to 30 minutes every 90 days.
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Geoff Z
We have always recommended the first oil change at 6 months regardless of hours. Then at one year and every year following. We have always felt peace of mind getting the synthetic in there. The milky oil is always going to be an issue. Compared to the over all cost of the  investment a few extra oil changes is negligible. Same thing with the running interval. We tell folks your book will say oil change at 200 running hours. We still believe in 100 hours as it was for many model lines. Then let the customer make their own choice.
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BrianMartin
Theres an * in the manual for Canada.. Every 100 hours.
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78buckshot
We don't have any units that see 100 hours/year, many with only exercise time on them. I bought my 4390 from one of our customers, it's 15 years old and has 480 hours on the clock and it came from a neighborhood with lots of outages. We also recommend service once a year due to the condensation in the oil and also most of our customers are not hands-on, we have some that lock out on an alarm and the homeowners call to request service and we find it hasn't run for 2 -3 months.
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JayH
Geoff Z wrote:
We tell folks your book will say oil change at 200 running hours. We still believe in 100 hours as it was for many model lines. Then let the customer make their own choice.


Agreed on the 100 hours. Think of it like a car. 100 hours at 60 MPH is 6,000 miles.
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murphy
My Ford Fusion Energi is spec'd at two years or 20,000 miles for an oil change
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Geoff Z
Original cost of equipment and installation. Engine screaming at 3600RPM. Condensation issue. A few extra oil changes over it's lifespan is insignificant compared to major repair or replacement cost.
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JayH
murphy wrote:
My Ford Fusion Energi is spec'd at two years or 20,000 miles for an oil change


That's cheating! Your Ford Fusion Energi is a plug-in hybrid that runs on electricity much of the time. My Chevy Volt calls for an oil change at two years or when the oil life indicator says it's time. A Generac isn't the same thing as a Tesla.
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murphy
JayH wrote:


That's cheating! Your Ford Fusion Energi is a plug-in hybrid that runs on electricity much of the time. My Chevy Volt calls for an oil change at two years or when the oil life indicator says it's time. A Generac isn't the same thing as a Tesla.


There are a few Tesla drivers that would disagree with you.  They are upset because Tesla doesn't provide a way to power their house from the Tesla battery during a power failure.
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BrianMartin
78buckshot wrote:
We don't have any units that see 100 hours/year, many with only exercise time on them. I bought my 4390 from one of our customers, it's 15 years old and has 480 hours on the clock and it came from a neighborhood with lots of outages. We also recommend service once a year due to the condensation in the oil and also most of our customers are not hands-on, we have some that lock out on an alarm and the homeowners call to request service and we find it hasn't run for 2 -3 months.



I run across this all the time.. The look on their faces when I tell them the generator hasn't been ready to run for 9 months! 🙂

A great reason to subscribe to the dealer monitored mobile fleet!
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Timeout51
I run my 11kw for 30 minutes under load every month and change the oil every 50 hours or six months. We are in a coastal environment and it can’t hurt. In service only 8 months and 162 hours thanks to hurricane Florence.
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Geoff Z
BrianMartin wrote:



I run across this all the time.. The look on their faces when I tell them the generator hasn't been ready to run for 9 months! 🙂

A great reason to subscribe to the dealer monitored mobile fleet!


We see it constantly even weekly. No amount of reminders or education ever seems to be enough. They are also the most hysterical and crazy when they are in the dark. It then becomes our emergency when they have ignored our last couple maintenance reminders. 
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78buckshot
Ya cant fix stupid!
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Geoff Z
Timeout51 wrote:
I run my 11kw for 30 minutes under load every month and change the oil every 50 hours or six months. We are in a coastal environment and it can’t hurt. In service only 8 months and 162 hours thanks to hurricane Florence.


Getting your generator good and hot like that periodically is great to help minimize condensation as well. 
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BrentB
The owners manual has a double upside down cross next to the 200 hr oil change. Foot note says " unless operated in high ambient temps, dusty environments, etc. then 100 hrs." We stick to 100 hrs. or yearly no matter hrs.
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