Hi all

With all the talk on this stuff I ran a search on yahoo and found the = following in this digest

http://pulsar.= westmont.edu/aeronca/digest/engine/

"The ingredients were analyzed a few years ago in Light Plane Maintenance
(and I've seen it somewhere else too). My recollection is = that it is
primarily a lightweight oil, solvents and TCP(same stuff as in Alcor).
TCP tri-chloral phosphate(sp?) is a lead scavenger. I used to = use Alcor
religiously in my O-320 powered Pacer when I had to put 100LL = in it.
Really useful in engines that tend to get lead fouled plugs. The TCP
and solvents in Marvel Mystery oil are probably the stuff that unsticks
valves.

"Speaking of oil additives...here's an interesting article I came across.
It addresses MMO and interestingly says products of its type aren't
useful in modern engines, but did have their place in older automotive
and motorcycle engines(I guess that would apply to ALL = aircraft engines
since they haven't changed substantially or in most cases at = all since
the 40's)."

Kinchen, Curtis B

The link which accompanied this is unfortunately dead but I would = assume that the author was referring to the fact that modern engines are lead free = so not useful in antifouling. (I,m not sure about the aircooled vanagon. Did = they convert them to lead free?). Good idea to use it as a top -end lubricant = though

Dom :)