Lead Substitutes

[Gary.Beck@Eng.Sun.COM (Gary Beck)]

I am relatively new to this alias, this my have been discussed long ago,
but...

I have a 1951 MGTD, and I have been using a lead substitute in the gas
(I forget the brand).  Recently the car started misfiring badly, and it
turned out that the plugs were badly fouled with, I assume, the lead
substitute additives.

Is there some brand that is better than another?  Do I really need to
add this stuff?  Would an electronic ignition help keep the plugs clean?

Any advice would be appreciated.


thanks.

-gbeck