Just ask any owner of a 1980's vingage GM diesel car. Back then GM tried to convert their basic gasoline V8 block into a diesel, and the resulting GM just couldn't handle the stress of diesel operation.
Just my $2/100.
Thanks for proving my point.
The person I posted to is griping about technology 30 years old. Look at the 2006 Volkswagon TDI. 50+ MPG and the engines last for 300,000 miles.
You CAN have a lightweight TD engine that is reliable.