No problem, wasn’t questioning your decision. I’m not sure what type my mower has. It’s a Cub Cadet, but just the variety sold by Lowe’s. I’m pretty sure the transmissions on mine are made by HydroGear, and they do have an aluminum housing. But that’s about all I know about them.
I thought I had a problem a few years ago because one transmission would stop pulling when it got hot, but it turned out to just be the drive belt needed replacing, I think. Before I replaced the belt I did change the oil in the transmissions. I tried to siphon it out, started to disassemble and pull the transmissions, then just said the heck with it, picked up the front of the mower and stood it up. Probably didn’t get all the oil out, but I was tired of screwing around with it. Haven’t had an issue since, so I assume it was the belt. It is kinda dumb that they don’t put a drain plug in them.
I do mow a pretty big hill. Not in my yard, but I mowed my older neighbor’s 2 acres for a couple of years when he had surgery. My yard is a pretty flat 3 acres. I don’t pull anything with it. Never really have pulled anything with a lawn mower.
I wasn’t trying to convince you to buy one. But mine’s been ok. Belts, blades, bearings, and a couple of switches needing replaced over 12 years isn’t too bad, I guess.