Gas tank swishing sound when cornering
 

Is there any coating you can use on an in-cab gas tank that will make the swishing sound quiet down in the cab? Relocating the tank is not an option. Just would be nice to find a way to quiet it lot or even a little.

Re: Gas tank swishing sound when cornering
 

You would have to pretty much remove the tank to apply any kind of coating otherwise you could only get it on one side and I don't think that would do much good.

LockDoc

Re: Gas tank swishing sound when cornering
 

Stick chunks of gas tank foam down the filler neck.
Lizard skin/dynomat on the outside of tank might help.

Re: Gas tank swishing sound when cornering
 

It's for my build. The cab is in body shop stage. I just remember from when I drove it how annoying that sound was. I have a new tank sitting here and was just thinking while it was not installed yet what I could do to help this stay quiet. I know it still needs to ground out so I would mask where the cab bolts to it off.

Re: Gas tank swishing sound when cornering
 

Yeah dynomat might help. What is lizard skin? A paint on or a stick on?

Re: Gas tank swishing sound when cornering
 

:).. I thought when you said that removing the tank was not an option that it was already installed and you didn't want to remove it from the truck....:canada:

LockDoc

Re: Gas tank swishing sound when cornering
 

Sorry my bad. I meant moving the gas tank to the rear frame under the bed. That would be the ultimate way, I just did not want 20 guys to throw that out.sorry. I edited my first post to relocating not removing.

Re: Gas tank swishing sound when cornering
 

I put Dynomat on mine, then put the factory cardboard over it and I can't hear the gas moving around anymore.

Re: Gas tank swishing sound when cornering
 

Awesome. Just one the one side facing the seat or all around? If all around did the tank fit nice and snug after

Re: Gas tank swishing sound when cornering
 

x2 on the dynomat option.
Without removing the tank I put a dynomat style product on first with a high density foam over the top. I did this on one side only and now I can barely hear it. Well worth it.

Re: Gas tank swishing sound when cornering
 

Hey Rod, keep it full of gas and you don't get any swishing :haha:

Re: Gas tank swishing sound when cornering
 

I have dynamat strips (don't bother covering the whole thing, it's not insulation, doesn't work that way) and then the factory tank carpet, because I have buckets.

This has two purposes - the dynamat "deadens" the tank wall and the carpet is sound insulation.

Keeping the tank more full might help as well. Less room for the contents to slosh around in.

My Dad had to keep the tank level below 3/4 or gas would splash out of the filler neck and onto his shoulder, and since he smoked a pipe, that was dangerous. I suppose he -could- have fixed it, but he just chose to run less gas....

Re: Gas tank swishing sound when cornering
 

I bought my insulation at Home Depot, its called Frost King. Comes in a roll and is sticky on one side. No more fuel sloshing noise.

Re: Gas tank swishing sound when cornering
 

Yes, just the one side.

Re: Gas tank swishing sound when cornering
 

Huh, thought this was the charm of these trucks. ;)

Now I'll have to obsess about doing this.