""Also I have read quite a bit that WVO can be detrimental to seals and what not due to the acids in the animal fats found in it. Any one with long term experience find this to be true?""
170k on a VW on wvo.
35k on my bus on wvo.
Most people dissing wvo have come no closer to it than whats left on the bottom of their plate of french fries. IF DONE CORRECTLY, you can get many miles with no problems. I went inside my VW motor with 300k on in (100k on veg) after it was worn out-looked fine inside. Bearing wear was fine-carbon build up was better than average. I was inside my 7.3 after I cracked a piston (too hi EGT's going up a big hill.) 25 k on veg-you couldn't tell any difference.
Theres a bit of a learning curve involved. And if you are going to base your discision on what bus to buy on running it, the 7.3 is the best choice-12 valve Cummins next.
That being said, you got 400 gallons of oil kicking around? You got a place to filter it it? You got a place to store it? You got space on your bus for 8 55 gallon drums-or a tank that size? You ever drive anything with 3200 lbs of movable ballast? If you think that everyone will be glad to give you their old oil, you're 10 years too late to the party.
Its now something people PAY for-and BioD companies have aggressively snagged most of it.
I've been doing it for 9 years-and knowing now what I have learned-and the lack of availibility, I wouldn't do it again.