Care to post your opinion/s about valve oils?
My opinion is that you should probably use valve oil.
I used Al Cass back in the 70s/80s. I use Hetman today for 2 reasons: it doesn't smell, and it comes in every variation from thin oil to thick grease.
Some people talked about how long oil lasts. Once a week, I wipe down my valves and casings, and then re-oil. I rarely need to re-oil in between my weekly routine. Personally, I believe this has more to do with my weekly cleaning routine than it does with the oil I use.