So I've heard and seen quite a bit about the MB 300-series, esp b/c I'm interested in getting a MB diesel and converting it to run on WVO.

It seems like a lot of people gravitate towards the 300-series because they are supposed to have had pretty good reliability over the years, but I'm wondering if any of you can confirm or deny this and also I'm wondering how the 190-series stacks up?

Were the 190's just lemons or were they good for a while but had too many parts which would fail after a certain time?

Thanks in advance