I do not recommend trying to pour this product cold. I tried using the product this morning and all it did was overflow sending an oily mess down the side of my car. It has the consistency of diesel fuel when cold and won't flow. The short filler neck compounds the problem because it's not long enough to open the flapper. A #[email protected]! mess this morning that I did not want to have to deal with on my way to work so I had to throw away what was essentially a full bottle of product. $$$ wasted.