I've been researching for a few days now about wether copping a 4cyl or 6cyl 4WD is better?! There's pros and cons for both but wanted to get your opinion and suggestions for specific but mostly basic questions where i can't seem to find it being answered directly!

1). Which would be better for Off-Roading in General, Steep Hills, Beach, Semi Tough Terrain, Towing (Jet ski, camping gear etc) and Highway use ?

2). Fuel Consumption? Now usually 4cyl uses less fuel due to the size BUT i read that the weight of the vehicle might mean the motor has to work harder which means it will most likely be using more fuel than a 6cyl

3). Would a bigger engine generally mean more maintenance (Oils changes etc)

4). I heard with 4cyl 3.0L GUs blow out around 250,000KM + due to fuel overfilling and other issues? Is this true, if so would it be better to invest a little extra on a 4.2L/4.8L 6cyl

5). In general which would be better all round, 4cyl Nissan Patrol or 6cyl Nissan Patrol (I understand 2000-2003 models aren't the best mechanically?!)