Hi Everyone,
Thanks for all the comments posted on this issue, I currently run a 3.2L turbo diesel, just completed approx 26,000kms. Do want to look at some additive just to keep the fuel from starting to gown any form of growth.
I remember when I was in the army, our armoured vehicles (APC's) started to form a jelly like substance in the fuel cells. The vehicles mechs used something called Bio-bore if I remember rightly.