Thread: Toyota or nissan V6

Originally Posted by XR500

Diesel contains 15% more calorific value per litre than petrol, so that's a bit more energy efficiency right off the bat. Then the injection pressure and atomisation process of diesel injection adds yet more efficiency.

Most old style large capacity lazy diesels are renown for longevity. And having looked at the average fuel consumption people on here are getting from their modern diesel 4x4s and the 1 or 2L/100km improvement over the older engines does not see me wishing to blow $$$ on a new vehicle when my 25 year old one works perfectly well for me...and is completely maintainable by me.

Going to a UK style colour coding of diesel would be dumb. Its complicated, they have three colours, it means yet more costs on farmers for storage of different coloured bloody diesel. RUC's work fine, and the govt makes a shitload more tax out of RUC's than they ever would be just taxing diesel. A 50 tonne B combination consuming 9 x toyota hiluxes work of diesel every 100km will be paying waaay more than 9 x 3 tonnes of RUC.

If you use the LR Disco as an example, the newgen engines don't necessarily get better fuel economy but you get considerably more power for the same fuel consumption.

I thought I'd be a diehard old school diesel fan but I bought a Disco 3 with a 2.7L V6 paired with a 6 speed trans, the difference between that and previous gen vehicles is not even comparable.
Admittedly I think the transmission is one of the best improvements, the difference between the 6 speed ZF and 4 speed ZF is possibly the biggest upgrade in the vehicles drive train, especially when towing.

I'm not doubting that the older diesel are great in their simplicity ( although they still had EGR valve back in the mid 90s) but I think many common rail engines have proven to be reliable in the long term, with many doing very high kms.
Biggest issue IMO is the cost of parts is considerably higher in the modern engine, at least from what I've experienced.