Forum Discussion
1775
Nov 18, 2014Explorer
I change the oil in my Onan 2800 every year at the start of the season. We don't use the generator often (it gets more monthly exercise than actual use) and we don't reach a 150 hours in a year. Onan says if not 150 hours in a year then change the oil yearly. There is a chart in the manual for what grade to use - it varies by conditions. The Onan comes with 15W-40 in it. The chart varies by general temperature per location - 32dF and above - SAE 30, 10 dF to 100, SAE 15W-40, 0dF to 80dF - SAE 10W-30 or 10W-40, minus 20dF to 50dF - 5W-30.
We put in 15W-40.
We put in 15W-40.
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