Thanks to Harvey I recently got to spend some quality time with my truck driving through 1' - 2' of water. I was wondering what fluids should be changed or other maintenance. It seems to me that both diffs and maybe the transfer case oil should be changed.

 

I would change all the fluids in the truck.

Engine oil, transmission, transfer case, front and rear axles, power steering and any other that I might have missed.

I hope everything else turned out okay for you and your family?

Our company has branches down in SE Texas.

Two of our employees (Beaumont & PA) had some flood damage and our manager in Orange lost everything.

 

That brings up a great question. Is the 6 speed transmission a sealed unit like my old Tundra? We did great thru Harvey. Our friends in Dickinson lost alot of stuff. Like Two cars and anything in their house below 2 feet.

 

I drove thru flooded roadways between Houston and Port Arthur/Orange. I wasn't submerged or anything so I didn't change anything. Our trucks don't have power steering fluid since 2011 I think. EPAS now. A buddy of mine had a crazy lifted F250 but it was submerged helping people so he changed out the transmission fluid and oil immediately. He changed his diffs later.

 

This was probably the deepest. Any deeper than that, I rerouted.

 

Awesome picture. I only got upto the frame. So far I'm just going to stick with changing the diffs and xfer case oil.

 

Ive never looked to see where the vent lines are for the diff's are but that would be the only thing you might want to change. If they are high then even they wouldn't need to be changed.

My old tacoma had the rear diff vent right on top of the pumpkin, and the front was routed all the way to the hood...makes perfect sense right?

 

The rear diff breather is routed all the up to the bottom of the bed. That's pretty high up.

 

I didn't think there was any power steering fluid in the new trucks? Isn't it all electronically controlled?

 

The front diff vent is near the brake master cylinder on the firewall, the rear diff is near the spare tire, and the trans breather is on top of the trans.

Even though the vents probably stayed dry, the fluids still need to be changed if you were in water above the center of the hubs. The seals on all of the shafts are just lip seals for dust and rain. The pressure of standing water will be too much for them and water will get past and contaminate the lubricant.

OP, just change the fluids in the trans and both differentials and you should be fine. There is no power steering fluid on your truck. Brake fluid, engine oil, and engine coolant should still be fine.