I think if it's been on lead for first part of it's life it's "coated" enuff to be ok for a long time - I've put over 30,000 miles on a 235 using unleaded and it's still fine [about 80,000 total now]

Bill

Moved over to the Passing Lane

"When we tug a single thing in nature we find it attached to the rest of the world" John Muir
"When we tug a single thing on an old truck, we find it falls off" me
Some TF series details & TF heater pics & Rust-a-holics Unanimous parking lot