Hello,


CLR is for cleaning toilet bowls and bathtubs.

I have used a bench polisher to clean mine donning a particulate respirator. Because tetraethyllead was used up to 1993, Letharge bromide salts are in high quanities contained in the valve deposits of vehicles operated during that time period

Methylmagenesetricarbonyl has been reapproved for use in motor fuel. Be aware that high levels of maganese damage the myelin sheath leading to permanent reductions in dystal nerve conduction velocities.

I prefer to have the valves renewed in a sandblasting cabinet.


Goatman