hi All.
I am newbie to 4x4 world. Just started driving my used nissan patrol 3.0 2003 st model , which overall appears to be in a good condition but just heard that disel needs additive . I always drive petrol car all my life so a bit confused on this. I am based in OZ. so need to know what is your advice for me.

Shall i use a fuel additive, if so which brand seems better . I researched and found two fuel doctor and chemtech.

need help from the Pros here !

cheers
kam