Bruce381, where does your veggie info come from?
Have you personally tested the renewablelube, sterlinggrade or amg2000?
Years ago, I put 200k miles on a car with mineral oil. It had religiously 3k/3mo oil changes. It needed valve adjustments every 30k miles and everytimme I needed to clean the sludge off of the valve cover and whatever sludge I could scrape off the head.
This was in the late 1980's early 1990's. I also did tons of parts salvaging at the junk yards(when they were still called junk yards). And, I never saw an engine without sludge and would bet that they used mineral oils.
Maybe today mineral oil and synthetics are great. But, minerals oils sucked for 100+ years and we still used them regardless of the amount of sludge they left behind!
We are now at that point with these new vegetable based oils. So, you'll have to engineer for them a little. Maybe the vegetable oil will need different refining/blending practices. Maybe the oil temp needs to be cooler/controlled during normal use. Maybe more special additives will need to be developed. Maybe a oil pan heater will be needed to bring the oil up to temp during the winter. Maybe we'll blend these animal/vegetable oils with mineral/synths as a start.
I think that technology in the future will make it possible. I remember my 1st microwave, 1st cable TV hookup, 1st cellphone, my 1st OBDII car..... and I can't wait until enviro-lubes show up at Autozone.