Ok there are two V-6s in the Explorer for that year. The 4.0 Litre SOHC, and the 4.0 Litre OHV. If you open the hood up, and see a plastic covering that says SOHC on it, well guess what you have?
If you have the SOHC, that is the stronger and more powerful V-6, but it is also has been known to have numerous mechanical problems related to the cam tensioners. If you can get this fixed under warranty (The warranty goes until 72K miles or umm...160KM?) then it's a great engine. You will notice it's gets a somewhat bad reputation around here, but being an SOHC owner, I can say that mine has given me no problems, and I love the engine

When the tach hits 6K I know i'm glad I got this engine.
The OHV, even though it is certainly not as powerful speed-wise (160 HP vs. 210 HP) is more reliable since it has been around much longer, and it will last 200K miles (420 KM) easily. There are literally hundreds of X's on here that last into the 150K-200K mile range without ever needing an engine re-build, and perhaps 1 tranmission re-build.
Yes, the trannys are the weak point in the truck, but again, they are not bad by any means, and when you think about the amount of strain put on the AOD-E (5R55E if you have the SOHC) it lasts for a long time. Put a transmission cooler on and no worries
Hope you get the X and enjoy it! They really are great trucks, and will last a long, long time. You'll really stand out too in Australia
