I agree, but there's no reason why my $500+ mower should already be done for after two and a half years worth of work. Also, with being between jobs/starting my own business right now, as well as needing to drop $4k into repairing the engine on my truck unexpectedly I'm a little short on commercial mower money, and I dont see much of point in said investment if I only need it for 2-3 years before buying a riding mower for acreage in the future.
I use rotella t6 as well, as well as premium 100% gas. One of the issues is the self propelled bits are worn out, and while I haven't done a compression test, I am relatively sure my compression is going out. It has a hard time mowing anything, regardless of height after it gets warm. Constantly bogging down, the whole nine yards. Took it to a shadetree mechanic and a husqvarna dealer last year, had the carb rebuilt, parts replaced, everything serviced and stuff, but no change. I serviced it this year about a month ago, again no change. I may just buy a non propelled model, I feel like it would be more reliable and I could have a little more juice for mowing as opposed to making it easier for me.
As much as I love the move to battery stuffs, buy a Honda. You don't have to spend $700, but those nexite models are supreme. Look for any other brand with a Honda motor on it. I have a Troy Bilt with the Honda 160 motor on it. Regular oil/filter changes, 100% phillips/conoco/shell gas, and constantly file sharpened blades she's been going strong for 13 years. When and if it does finally die, I'll suck it up and buy the high dollar dual blade nexite deck Honda 190. Buy once, cry once.