Gonzo42ExplorerFeb 06, 2014What is it with DEF?Just what is the Diesel Exhaust Fluid (DEF) ? What does it do and why do I need it? This is my first diesel and I never heard of it.
TucsonJimExplorer IIFeb 06, 2014By "big rigs", I'm refering to commerical tractors such as Freight Liner, International, etc.
About RV Tips & TricksLooking for advice before your next adventure? Look no further.25,115 PostsLatest Activity: Mar 04, 2025
