How I can clean a salvage title?

not possible-insurance and valuation of the vehicle change permanently once it is salvaged; from an insurance standpoint salvaged vehicles are declared total losses in comprehensive plans and are paid at the fair market value (or percentage thereof) when a claim is filed. Once the claim is paid then the vehicle is devaluated to the salvage value. Of course as the owner you can still sell a salvaged vehicle but the salvage title is an indication that it has been paid off and should bot be valuated at its full resale value.

yep sndfreQ is correct but in some states you can’t even sell a car with a salvaged title more than once. In my state only a junk yard can buy a car with a salvaged title to sell the parts.