The American Engine rebuilders Association puts out a Quarterly magazine which is sent out to over 15,000 engine rebuilders through out the country. The cover article is all about flat tappet engines and the lack of ZDDP. Most engine rebuilders have been aware of the problem for over a year. There is also alot of great info on rebuilding and breaking in an engine. Definitely a good read.Here is the link...
AERA - Engine Builders Association
Pete
Kirbans
AERA - Engine Builders Association
Pete
Kirbans