JRVicHammer

Also, some of those holes are needed to mount running boards. I have had my '09 for 3.5 years now and was just under there last week and the tape is still holding on all the holes and no rust (and this truck has seen it's fair share of road salt in the winter). In other words, I wouldn't worry about it.

Half_ton

Bondo holds moisture, bad idea
I'd just load the hole up with expanding foam and spray it with black paint after its dry. Or find a firewall grommet that will fit.

Mlarv

Don't use the foam it hold more water then bondo it is not made to be in the weather it is supposed to stay in a wall. Retape and forget

volvodoc

How about so super sticky window flashing?

Buck183

Dodge has the tape on their trucks too. Or should I say Ram?

Buck

blue beast

Well, ya'll ever thought that they might be on there for drain holes...if you look close at almost all the holes with the tape , there is a hole under it in the rocker panel(where the 2 pieces of metal separate) . I am no engineer but thats what it looks like to me. Maybe before you start covering stuff up, you should talk to ford to make sure there is nothing inside the body panels that need the air holes or holes to drain.

truckwheelin

I also like how the sill clips protrude. Found it entertaining the first time I noticed.

Sinfulpride

I've installed that tape on the line at the old ontario truck plant years ago.........it's installed to stop wind noise

shortride

iTrader: (1)

A lot of the hole you find underneath your truck are used to mount the metal panels onto welding jigs during the assembly process. After the body parts are all welded the holes serve no purpose. While driving, any moisture or water that gets into the body cavities can't get out or evaporate and then the truck will surely rust from the inside out. There is some calking used between some body panels but it's not intended to be hermetically sealed.

Our truck bodies go through a rust inhibitor dip tank process before painting. If all of the holes were pluged then some of the rush inhibitor could not drain out.

Some of you are making way to much out of this. Ford has been building trucks for a long time. Give them some credit for knowing what they're doing.

BCMIF150

^^^^^

A voice of reason...but will anyone listen?