Why Your Car Might Need an Engine Flush: Exploring the Benefits and Risks

by AutoExpert   |  6 June, 2024

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Let’s talk about giving your car's engine a good spring cleaning, shall we? I mean, we're all about keeping our rides in top-notch shape, right? Well, one thing your mechanic might suggest during your next oil change is an engine flush. It’s pretty much what it sounds like – giving your engine a bath to get rid for all that old, grimy gunk.

When you take your car in, they might start off by adding some special chemicals to your engine, which gets it all nice and soapy inside (not literally soapy, but you get the gist). They let your car run for a few minutes to make sure the cleaner spreads everywhere the oil would go. Then, they drain it all out, just like they would with your old oil, before putting fresh, clean oil back in.

Engine Flush

Sounds good, right? But hold up—while cleaning sounds like it should always be a good idea, some car manufacturers like Honda and GM actually advise against engine flushes for modern cars. They say their cars are already designed to keep the engine clean with regular oil changes.

Now, there might be times when an engine flush really makes sense. If your car's a bit older and wasn't taken care of properly before, or if it just went through some major engine repairs, getting an engine flush might clear out any lingering crud. But for most new cars that are looked after? Not so necessary.

Engine Flush

Let’s dive into the five main benefits of getting an engine flush:

5. Kick Out the Jams: Over time, bits of debris can build up in your oil, which can clog up those tiny oil pathways in your engine. An engine flush can help clear these out, allowing oil to flow freely, keeping everything moving smoothly and reducing wear and tear.

4. Fresh Start: If your car’s engine has been opened up for repairs or if it’s a used car with a sketchy past, an engine flush can clean out any leftovers or debris before new oil goes in. It’s like hitting the reset button for the inside of your engine.

Engine Flush

3. Clean Oil for Longer: If you’re starting fresh with a new oil change, an engine flush can help keep that new oil clean longer. By removing the old gunk, the new oil can do its job better, without picking up old dirt.

2. Beyond the Filter: Oil filters are great, but even the best can’t catch everything. An engine flush can help get rid of those extra tiny particles that might slip through, helping to prevent them from forming new sludge.

1. Smooth Operator: An engine flush can help clean out the parts of your engine, making it run more smoothly. This means better performance, and sometimes even better fuel efficiency, almost like how it felt when it was brand new.

But, a word of caution: In really old cars, sometimes the gunk is actually plugging up old cracks or leaks. An engine flush might clean these out and lead to new problems.

So, is an engine flush worth it? It depends on your car and its condition. Most newer cars don’t really need it thanks to advancements in engine technology and regular maintenance. But for those exceptions? It could be a useful clean-up.

Always good to chat about keeping your car in tip-top shape! If you’ve got more car maintenance questions, just hit up your local mechanic or check out more info online. Keep that engine happy, and safe driving!

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