Ok guys, I have some maintenance decisions to make. I have an '03 F150 FX4 with the 5.4L that now has 136K on the clock. Several years ago I used it to tow a travel trailer, but I haven't used it for heavy tow duty in a while. The wife and I just bought a new camper and the old F-150 is going to be put back into tow duty once again. We drove it from Mississippi to Cincinnati this past week to pick up the camper, and pulled it back down through Chattanooga and then home. The truck ran great and pulled the camper like a champ.

The decision I have to make is a maintenance one. The break in camping that we had for several years was due mainly to financial reasons, and a lot of maintenance on the truck was unfortunately neglected during that time as well. None of the driveline fluids have ever been changed (transmission, diffs, or transfer case). So, that being said, I need to figure out what the best course of action will be in resuming the maintenance on this truck to maximize its longevity.

I know some do not recommend changing the transmission fluid if it hasn't been done prior to 100K miles. I just thought I'd see what you guys would do if you were in my shoes.

Thanks!

 

Plugs, coil boots, and play it by ear for the rest.
When something goes wrong just fix it as it comes.
Always be on top of the brake condition for Pads etc.
Cooling systerm flush and antifreeze replace and all that kind if thing if they have not been done.
Good luck.