Nissan Patrol 2011 Problems

I don't believe there are air-suspension seats available for the Patrol. Rather than alternative seats you should be looking at the suspension to soften the ride. Check out aftermarket springs and shock absorbers, and in the meantime put some weight in the tray. In the old days the lads who drove utes would throw a couple of bags of cement in the back.

From what you say it would appear the engine output is below what it should be, and the high fuel consumption would seem to reflect that. The output should be 118 kW at 3200 rpm and 380 Nm at 2000 rpm. Persist with the dealer, and Nissan, the company has a responsibility to fix your car. Your idea of having a Nissan rep ride with you as you demonstrate the problem is a good one.

I wouldn't do it, there's no justification for it. Some people might think there's a benefit in added lubrication of the valve train etc, but that's unlikely as diesel fuel does have some lubrication properties anyway. You might clog up the catalytic converter if you did run it on 2-stroke fuel, and it's likely to result in more exhaust smoke.

The solution has to come from Nissan, so that's where you need to direct your concerns. I would seek a meeting with the dealer and express your concerns directly to the service manager, and request that a Nissan factory rep drive your car. Go along on the ride as well. The fact that your car is using more fuel than it should suggests that it is down on power.

There is no scheduled maintenance on the Patrol's pump or injectors, and our Nissan experts tell us the pump and injectors are very durable. They add that they have vehicles they service that have done well over 300,000 km without any servicing on the fuel system.