Need that engine looking fresh? We tell you the right way to use engine degreaser to get your engine bay spotless.
There are lots of reasons you might want to clean your engine: to keep your show car looking fresh, to help make sure everything under there is working the way it should, and even to help find that oil leak, because it’s impossible to tell where it’s coming from when everything is covered in oil. Here’s how to use engine degreaser to make sure you get your engine bay spotless without causing any damage.
How to Apply Degreaser
Before spraying degreaser all over your engine bay, let things cool down. Spraying the foam onto a hot engine is a bad idea. Doing so can create hot steam that can burn you, evaporate the degreaser before it has a chance to work, or even cause a fire.
Protect sensitive parts of your engine bay. An open fuse box or exposed cold air intake filter are two places you do not want to spray degreaser. The same goes for any cracked or exposed wiring (two things you should fix anyway). Go easy on parts like your alternator. You can cover any or all of these parts with a plastic bag.
Spray on your engine degreaser. A foaming product makes it easier to see where you’ve sprayed the cleaner. Regardless of the type you use, make sure you cover every surface you want to clean.
Parts Cleaning |BLet the degreaser work. Read the label for specifics, but you should usually let it sit for 10–15 minutes to really attack the grease. If there are some extra thick spots, you can use a stiff bristle brush to help break up the grease and let the degreaser do its job. Soak those spots again after a scrub.
Parts Cleaning Brush
Rinse. Unless you’re a pro, don’t use high pressure water on your engine bay. There are too many vital electronic components that could have water forced inside this way. Use your hose nozzle instead. And you should still avoid spraying too much water on parts like your alternator, fuse boxes, and ECU.
Repeat, if necessary. Years of accumulated grease, grime, oil, and other contaminants can take a few tries to get rid of. Think of it like removing one layer at a time. Repeat steps 2, 3, and 4 until you’re happy with the results. Remember that even with the best engine degreaser, your old engine isn’t going to look brand new again.
If you want to keep your engine looking grease-free, there are products to help you do exactly that. An engine shine and protectant product helps by leaving a protective layer on your engine bay. That way cleanup will be a snap next time around.
How to pick an Engine Degreaser
Engine Degreaser Spray
Engine Degreaser Aerosol
Your NAPA Auto Parts specialist can help you pick the right degreaser for your application, so ask them in store if you’re having trouble deciding.