My HF 4375 manual says 20 hrs. I changed it at 25. Oil looked good, minimal ferrous on the mag dipstick. I had Amsoil HDD in it. I think with a 5 w40 i will try 50 hrs.
Oil looks dark but not black - it definitely does not look like new oil.If honda manual says every 25 hours if run straight thru then I am wrong.. and your doing the right thing. Just seems like constant running with no hot cold cycles should be easy hours. I never have seen a manufacturer saying 25 hour oil changes are required.
What does the oil look like ? I would love to see an oil analysis after 25 hours for fun
Then i am very wrong in my earlier comment. And 25 hour changes are the way to go . Longest my small 2500 watt 5.5 hp honda gx engine with generac winding end has run has been three days. I changed oil after the power outage was over in several cases.
The oil still looked fine ( 5 w 30 mobil 1 ) but you cant tell much by looking at oil.
I don't think the Honda manual for any generator calls for 25 hour oil changes. Mine says 100 hours. But let's think this through - we are dealing with a low-stressed motor, running at constant speed. It's like changing a car oil at 1,000 miles or less. I advocate a quick break-in change, but after that, you need to go at least 50 hours. 25 hours is not connected to reality.To be fair my Wen manual says 25 hour oil changes. I don’t subscribe to this I do ~100 hours.
Just my $0.02
Honda EG2800 manual recommends every 25 hours if used continuously or under heavy use.I don't think the Honda manual for any generator calls for 25 hour oil changes. Mine says 100 hours. But let's think this through - we are dealing with a low-stressed motor, running at constant speed. It's like changing a car oil at 1,000 miles or less. I advocate a quick break-in change, but after that, you need to go at least 50 hours. 25 hours is not connected to reality.