First let me say, great to have you drop in Bret.
You have an interesting question which I have never even put any thought into and wonder what kind of problems do these guys actually see using a synth oil. In looking at the design, it like a motorcylce or toyota engine, has gears and would need a high end lubricant that can withstand shearing unlike a regular motor.. I also see where it could be a problem if oil would get past the seals in the rotor causing fouling of the cyls.
I would suspect because of the seals used in the internals of this engine as that is unlike a conventional engine the barrier that prevents oil from passing into the combustion chamber maybe?
I wonder how old is the mobils data posted against using in a rotary engine and what reasons they used as to why not.
[ June 22, 2002, 01:09 PM: Message edited by: BOBISTHEOILGUY ]