Not true. I bought a fresh-stock American-made one earlier this year.
Not true. Lots of oil-filled transformers (including ignition coils) are still made in America. It's just the oils now used are different than the ones that were used back when transmission fluid contained sperm whale oil and gasoline contained tetraethyl lead.
Sounds like you've been getting your ideas about ignition components from Glenn Beck or Rush Limbaugh.
