Subject: Prevention of static electricity in a vehicle cooling system.

I have an electrical charge building up in the aluminium/plastic radiator 
of my car. Its eaten one out after less than 6 weeks. The coolant reads a 
positive charge of upto one volt, the external fins of the radiator read a 
one volt negative charge. Maximum voltage permitted is less than 0.3V.
New coolant has been used, pH is greater than 10 (limit of my meter. 
Checked each earth for stray current using the coolant as a source to 
earth - no luck there. The coolant holds its charge for several hours, 
slowly dissipating. I know static can be produced by pumping liquids down 
pipes, is this the most likely cause? cooling system contains Glycol, 
plastic header tanks on radiator, aluminium core, rubber hoses, cast iron 
block, aluminium plugs in the block, plastic or cast alloy impeller on the 
water pump.

Re: Prevention of static electricity in a vehicle cooling system.