G'day all. Thought I'd add some fuel figures for our combined rig to the thread.
Tug - 2011 Patrol GU7 ST wagon, 3.0 Common Rail Diesel, manual transmission. Bullbar, snorkel, roofrack with 120W solar on top, AUX battery, rear awning, Outback drawers and ARB fridge. Standard Nissan alloys and tyres. Engine is moded with a Diesel Smart module with boost control, integrated pyro and catch can.
http://www.supercarperformance.com.au/diesel_smart.php -
be warned - this webpage is difficult to read due to white print on black background.
'Van - 2012 Sterling 17.55-4 OB
I monitor the average (and instant) fuel useage with a Scangauge and it consistantly reports fuel usage the same as odometer/service station pumps. Usually less than 1 litre variation. PROVIDED I STAY AWAY FROM COLES OR WOOLWORTHS OUTLETS.
I have found many instances at Coles or Woolies where the pump 'short' supplies the amount shown on the pump. The patrol has a 30 litre sub tank and most other outlets will click off at between 30.2 and 30.5 Litres. Have had occasion at some Coles or Woolies sites where the pump indicates up to 35 Litres!! Seems someone is tweaking the calibration adjustment on the pumps. On one occasion I filled a "Sceptre" red plastic jerrycan. It is opaque and has a 20L guide mark as a safe fill level, near the top. I stopped filling at the mark but was really taken back when I turned to discover that the meter on the pump showed almost 27 Litres!! I asked the console operator as to when the pumps were last calibrated - but the junior just had no idea. That is a 35% overcharge! So much for the 4 cent discount, which on $1.579 diesel only represents a 2.53% discount!
Our Nissan fuel consumption.
Vehicle only 11 to 12 LHK average.
Towing the Jayco prior to engine enhancements 18.5 LHK average.
Towing Jayco after engine mods 17.5 LHK average.
Incidentally the Nissan/Jayco combination (~5T) uses significantly more fuel than the 5.8 Tonne Hino RB145A motorhome that we had previously, which was usually in the 14 LHK region.