Does anyone know if the 2001 or later engines need to change fuel lines to run biodiesel? I understand that the change is needed for older engines which used natural rubber lines?

 

I changed them on my '98.
I'm almost betting you would need to, I don't think they used Viton until after 2004.
I change them on all of my equipment just to be safe.

Are you running your own bio or station bio?

If your own make sure it is clean and passes 27/3.

 

Thanks, I'm running my own, so better change the hoses.