I hate to say this but I was on flight status when these were flying.......
Nicknamed the "Mojave" Went for a ride with some buddies who wanted to scare me. Aurotoation did the job. Falls like a Greased Safe...
For those who are not familiar with Pima Air and Space Museum, its worth a visit if your ever near Tucson, AZ
www.pimaair.org
And yes OIl was Primary, also in the CH-34...Lots of Oil and then some gas..... If it stopped dripping, it was empty.