I worked at a garage where the owners owned Peterbuilts to haul milk. When we changed the oil, and all the filters, we used to completely fill the fuel filter with transmission fluid. Works for deisels, why not cars. With that said, I wouldn't. There are a few products, as mentioned above, that are for that purpose. I bought some from O'Reilly's that hooked up to a vacuum port. It was a pretty cool setup, but I didn't notice that it did anything. I would try the GM stuff.