The PROPER Way For An Engine Flush

Today we dive into doing an liqui moly engine flush. A lot of rumours about how it is bad for your engine, with the help of my N55 I would like to show you the correct way of doing it.

Engine Flush

The oil used

In case you don't know the order, it is:

add engine flush to oil
run for 10-15 minutes
drain oil and change filter
fill with lower quality oil
run for 10-15 minutes
drain oil and change filter
add good oil

[mcdoob]

I emailed Liqui Moly and asked them if you need to do a second oil change after the flush and they said you don’t need to. They basically said that the engine flush is just highly concentrated version of the additives that are in their normal oil and that by draining the oil with the flush in it, you remove enough of it that you don’t need to change it twice. It will just mix with your new oil. These companies have already considered these things. So in case anyone is wondering- this is a waste of time and money

[jordanblair]

I'm buying an '06 Jeep Commander 4.7 with 180K miles that's had 4 previous owners and unsure of maintenance, so this is the first thing I plan to do. Thanks for doing this video.

[adrianjimenez]

Nice technique, I did the flush differently, I drained all the old oil and filter, put a cheap filter and cheap oil with the flush, after 15 minutes i drained the oil and put a good quality oil and filter

[jpete]

I would only ever recommend ever doing this if you have an older, high mileage vehicle and you're unsure or know oil changes haven't been done on time and it has issues like oil burning or other performance issues. If oil changes are done on time using a good quality oil, you should never need to do this because the detergents in the oil are good enough to keep the engine clean over the long haul which prevents sludge buildup.

[josephbrown]

Just done my first ever oil change and was thinking of doing a double flush. I'll definitely try this on my next one in 5000 miles. Instead of liquid moli I've added a bottle of marvel mystery oil into my engine to do a gentle clean. So I'm excited to see my results and may send off samples for testing just to see how I can look after my car.

[gotdirt]

If you know the previous owner and are certain the vehicle received regular oil changes then a flush could be a good thing to do. However, it's not recommended to flush if you don't know the oil change maintenance schedule it received. Lets say the vehicle engine is full of sludge, then cleaning it out as good as you can may seem right. But think of where that sludge goes. What you see draining into the waste tray is only part of it. Anything internal ((filters/screens) are now possibly clogged with sludge.

[BW-kvwj]

To be thorough, drain oil, put in cheap oil with flush. Drain and put cheap oil in again and a second can of flush. Drain, put in cheap oil again. Drain that out and put in Amsoil 5/30 Signature Series. So you will need 3 rounds of cheap oil and 3 filters and then the last round of the good stuff with a good filter.

[batterynerd]

I will also do it like you did. The oil flush breaks down the oil and you definitely dont want any of that in the new oil. Also having a second cheapoil filter to filter out the dirt also is a good thing

[stroke]

Engine should be at apperating temperature, before adding the engine flush. Good effort 👌

[pg]

The only proper way! 😄 nice video! I’m just to greedy to use an expensive filter both times, I always use one cheap filter for the flush, and one expensive filter for the proper oil change

[naturoidz]

I've seen online that, it's not good to do full engine flush with a car you have no history of oil change maintenance because filters in the engine might clogged up. They say, you wanna do it slowly with frequent oil change intervals. Maybe a little additive like gumout or seafoam before oil change would help it.

[mr.no]

Hey man nice video, you certainly know what your doing great job, BMW to BMW lover I recommend draining the same amount of oil that you are adding engine flush to prevent overfill. 👍 Keep doing what your doing

[dogbite]

Very thorough Sir. Clean engine oil benefits the N55 engines.

[BassicVIC]

What if instead of pouring the Liqui Moly engine flush into the old oil and then rinsing the engine with the cheap oil you empty the old oil first, then do the Liqui Moly Engine flush with the cheap oil?

[skazariants]

I wonder, if you get the same color if you do double oil change, but without the flush :)

[seniorprogrammer]

I think it is good to drain old oil, add cheep oil with liqui moly engine flush with new filter, and finally add your regular oil with new filter, then you are good to

[gregdede]

i do first drain oil and add chipp one with flash and replace with new oil

[pixelart]

1:36 of everything you said, when you said "I shall take.." I laughed so hard. 😀😂😂. You sir, are an English man

[drnanang]

How many cans do I need for a V8 5.7litre Engine. Truck uses 8litres of oil.

[toxmaster]

You should try test with paper and dirty oil after second oil, it will be the same.