What Actually Cleans Your Engine? (I Tested Everything)

When it comes to washing their car, most people focus on the outside. But a lot of people neglect cleaning under the hood. But a clean engine bay is actually one of the most important things for your car's health. So, today I'm going to show you how to clean under your hood safely, and I'm also going to be testing out four different products on four different vehicles with varying levels of dirt, dust, grease, the works. On the first engine, we're going to be using this DIY home remedy recipe. On the next engine, we'll be using this old-school foaming engine degreaser you've probably seen before. On the third engine, we'll use a a product from a company that we've been having really good results with. And the last engine, we're going to be using just a super gnarly industrial cleaner. I've also got some cleaning products I'm going to use along the way, as well as some detailing products that I'm going to use to finish everything off. So, we're going to compare all four of these and see which one cuts through the grease and grime the best.