[Vwdiesel] Burning Crankcase Oil

[Val Christian]

While on one of my varied pursuits, having nothing to do with diesel VWs,
I stumbled upon an opinion from the NY State Attorney General (perhaps it
was the comptroller...don't believe anything I tell you).

The opinion states that off-road dyed diesel fuel, when mixed 5% with 
recycled oil, constituted a non-taxable blend of fuel (don't quote my exact
words), and the requestor was not required to pay road taxes on such
fuel.  [If the mix went to 4%, they were responsible for taxes, go
figure.]

I was wondering why a construction company would go to so much trouble to
save $$$ in diesel fuel, and risk all the problems which could result
from crankcase oil running through injector pumps.  So I dug a little more.

It seems that Cat has a bulletin out, which permits this practice, 
(and maintains the warranty coverage), with 5% crankcase oil, 
from the same engine.  Aggregating oil from other engines is not
permitted, and suitable filters are required.

Anyone hear of this?  I wonder if crankcase/WVO/whatever would be 
legal in other states, when mixed in suitable quantities?

Val

ps: I wonder if synthetics are used in Cat engines?