Straight WVO with a dash of 2EHN cetane boost at the moment. However despite it being the first day of British summer time, the unseasonably cold weather means I will add 10% petrol if the chill continues.
Very new to the Terrano but have run Mercedes engines on veg for nearly 20 years. From past experience sunflower oil was always the best closely followed by oil seed rape. Soya oil generally best avoided as could give very poor performance, results unreliable.
If the WVO is very thick due to over use then petrol or diesel added to assist in filtering. The WVO is always left for a number of weeks before the clear oil being poured off the sediment. This is then filtered through an ASDA brand J-cloth. One layer will filter down to below 10 microns, two layers to near 5 microns.