What did your 10KW generator cost you?
$1,200 - $1,500 maybe a little more.
What does it take 2 or 3 quarts of oil and a $10 filter?
So $25 - $30 to change it - not even $.10 a day!
I am a cheap bastard - I like buying stuff on sale and I like saving money - but I don't cheap out on oil...