Quote:
Originally Posted by BRENT in 10-uh-C
Two things to ask when you take the tank in for repairs.
1) Ask them what they will use to de-rust the inside of the tank. Most radiator shops no longer have the proper chemicals in their tanks to effectively do this. Even if they say Caustic, please know that Sodium Hydroxide will dissolve organic matter however it has no affect on rust.
2) Ask them what type of sealer, -and how will they know if it is truly coated inside?
A quart of sealer IMHO is not enough to coat the inside of a tank, --and even 1 gallon is not enough to slosh a tank with and know that it coated all sides of the baffles. If they slosh/coat the tank however it does not cover all of the areas, then you have a mess on your hands as the bare metal areas begin to rust. It honestly takes a minimum of 4 gallons to coat all the walls including the baffles, and most radiator shops will not have that quantity of material on-hand because once exposed to the atmosphere, it must be used in a short time period.
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Thanks. Good info to have! I had spent about 20 min on the phone with the owner, and had a good feel for what the EPA allows him to do or not do. He spent most of his time discussing Radiators, I brought up gas tanks. He said they do them too, but the info you are providing, is good to know before and not after!!!