nickname

A few weeks after successfully testing the 4wd of my Ranger in our field and being impressed just how well low range 4wd hauls you up very steep things I tried again this evening in mud.
Found a slippery bit that spun the off side rear wheel - stopped - engaged 4wd lo and set off.
It decided it didn't want to move.
Just sat there spinning the same rear wheel with apparently no drive going to the front at all or the rear LSD doing anything.

Help !

The Oil Light on my 02 Ranger 4x4 TD takes about three seconds to extinguish when cold. After an immediate restart it's almost instantaneous but after thirty minutes it again takes about three seconds to go out.
The engine is very healthy, has covered 128,000 miles, doesn't smoke, rattle or use any oil and is extremely clean plus it always starts instantly.
Do genuine oil filters have a non-return valve so that they don't drain out and could that the be the problem as I'm using god quality patterns?

Good evening. I'm new to the Forum and the Ranger and could really do with some of your wisdom.

I have my first Ranger which is an 02 MK2 4x4 Super Cab which I'm very happy with as I'm a Ford Fan and it goes well with my Capri and P100.
The remote locking suddenly ceased working on Thursday. Locked and unlocked with no problem then refused to re-lock from the fob. Central locking still works fine on the key but the fob doesn't.
Checked the battery at just over 3v off load and 2.6v on.

Is it possible for the fob and locking unit to get out of sync?
If so and having read this excellent programming post is it possible to reprogram the existing fob with the instructions in this post or is that only for new ones?

http://www.fordowner...&attach_id=2222

Sorry if I'm sounding a bit dim here but as you can see from my other Fords this remote stuff is a bit 21st Century for me!