Re: silicone spray and rubber?

[trishab@interwebb.com (Trisha Blethen)]

Angela Dupin wrote:
> 
> tonight I sprayed my lower control arm inner bushings that had minor
> surface cracks with silicone spray from NAPA.  one minute later the minor
> surface cracks had become massive failure with gapping tear.  what is
> going on?  I was following the advise of the list in trying to prolong
> rubber life.  Could one of the learned ones provide an explanation....please!
Mistake #1.....using anything oil based from NAPA....we lost a $3500
gearbox in the MR2 using their gearoil that had antifreeze sediment in
it.....they tried to tell me the engine had an anti-freeze leak to the
gearbox and prefaced that statement with HONEY!!!!!  Needless to
say.....they and we had a big go around resulting in many freebies at
the parts store for a while.....turns out there was another failure that
accompanied the problem so we didn't pursue too far.....but
anti-freeze????

There may have been something on the rubber that reacted to the
silicone....are you sure it was silicone and not brake clean or
something like that?