I got the new Haynes manual today (about 5 days after I emailed them for
it), opened it up, and it says this:

Special Hazard

Hydrofluoric acid

This extremely corrosive acid is formed when certain types of synthetic
rubber, found in some o-rings, oil seals, fuel hoses, etc., are exposed to
temperatures about 400 degrees C. The rubber changes into a charred or
sticky substance containing the acid. Once formed the acid remains
dangberous for years. If it gets onto the skin, it may be necessary to
amputate the limb concerned.
_____________________________________________________
Derek Drew                           New York, NY & Washington DC
ConsumerSearch
drew@interport.net
212-580-6486 (W)
212-580-4459 (H)