not here but in China (from douyin, china tiktok), lots of 4s service centre using these before changing oil.

a placebo effect or it is effective? dont think so any noticeable difference but might be useful in the long run?

If you always maintain your ride the correct way and use good quality oil all these oil additives or flush is extra money for the mechanic only. Oversea some people drive extended range (Over 15~20k only change oil), use poor quality oil or fuel which may increase the carbon/sludge formation in engine for long term, so when they go for servicing usually those mechanic will try to sell these flush or engine treatment as a way to increase their income.

https://www.theglobeandmail.com/globe-drive...article9624076/

http://mygarageairdrie.ca/services-pricing...kcase-flushing/

This post has been edited by littlefire: Aug 20 2021, 10:56 AM

There are good and bad with using these. You cannot use it too frequently as it has corrosive agents that will spoil your rubber seals.

In my previous 2 cars (Toyota and Honda), I used their recommended engine flush cause they always up sell you this product in SC. The Toyota one I used for over 12 years and engine has no problem. No seals issue except for the flywheel oil seal which is common.

As for the Honda, even better. After 8 years the engine is still very silent.

Is it due to the engine flush or is it due to consistent engine oil change? I wouldn't know.

Maybe do it every 2 times you change engine oil. I am doing this but so far only done once cause seldom drive during MCO.

I understand some people get issue (like leaks) after doing it for the first time on their old car. I am not sure if you can blame it on the engine flush cause the car itself already have issue. The engine flush only bring out the problem. So it is up to you to decide.

I flush everytime I change engine oil bec engine is more responsive after. Personal experience

To be honest I do use engine flush like once every 2nd or 3rd OCI, never had a problem and my engines always running relatively clean but I also use trusted good oils and never had bad sludge build up, so the whatever minor gunk removed must have been disolved well without clogging elsewhere.

The engine flush I used was like a thin oil cleaner which still has lubricating properties, bought in Ace Hardware, forgot the brand but made in USA and sold in a clear plastic bottle so can see how the liquid is.

Read that some el-cheapo pomen/users use diesel to do engine flush. Not sure what kind of issues it can cause but could be some old recipe used since old times.

sometimes I feel, there will be users spending that money on engine flush, then look for cheapest engine oil in the market instead of buying the best oil with that money.

then, many people believe what they choose to believe.

even some good oil sellers, will have a disclaimer, that using their oil will dissolve old gunk and cause oil leak.

correct OCI beats any remedies.

What about when user got a second hand car? Not sure what is the condition of the engine and want to clean it a bit without spending extra money doing overhaul. Engine cleaner is a product that has been recommended by nearly all car manufacturers. We are not talking about things like seafoam or voltage stabilizer or grounding cables or camber nut. These are things that car manufacturer does not introduce for a reason. But nearly all car manufacturers does have their own brand of engine cleaner and recommend them as well. If you say, ya they are useless then do you believe in camber nut? Nearly all car manufacturers does not comes with camber nut. It's not due to cost because it is only few ringgit per nut. Also, they will never recommend you do camber nut if you tell them your alignment is off.

Like I said, we all want to believe what we want to... I'm not saying right or wrong, it's about how you use it. Adding to that, there are different types of flushes, solvent vs detergent, and a blend of both. I read this some time ago, published in 2017: https://blog.amsoil.com/is-an-engine-flush-good-or-bad/

I will use engine flush, but certain types, and only when I need it, not every oil change.

There are more reasons why camber nuts are not installed per standard, than just cost. Think bigger. In fact, Toyota makes camber nut for certain vehicles: https://parts.toyota.com/productSearch.aspx...archTerm=camber


This post has been edited by alexei: Sep 11 2021, 04:56 PM

the only flushing I want but no more available nowaday is this.


come in 4L pack, so u drain old oil first, then close back the oil filter, fill up all 4L. run the engine about 10-15 minutes, drain it then put new oil.

unfortunately it no more here,

This post has been edited by ayamxxx: Sep 12 2021, 08:29 PM

never had flushing on my car with 175k km now, all this only regular FS oil change after 10k km. Engine still sound quiet, no EO eating issue

This post has been edited by ayamxxx: Sep 12 2021, 08:23 PM

Rather buy and use the best fully synthetic oil instead

Its contain solvent for sludge. If old engine some sludge already block the minor leak. When use this the leak open back.

cena 4s center use on left hand drive CKD cars? not same with CKD here

Actually can just use some cheap mineral oil, that's what I used to do. I drained the old oil, filled up with new cheap mineral oil plus an engine flush, idle it for 30 mins. Drained it again then would see how dirty that new oil became. Then I even refilled again with the cheap oil, idle for 15 mins and drained it again. By then usually the drained oil already golden clean. Then only I put a new filter and the real oil I want to use. But now lazy already so I don't do that anymore.

This post has been edited by 6UE5T: Sep 13 2021, 12:28 PM

I am going to do something like this.

- pour in engine flush into old oil and let is run for 15 min. Then drain the oil
- pour in cheap fully synthetic oil (Bold) and use the car for 1 week
- drain cheap oil and put in new Shell synthetic oil. And new oil filter.

LOL...a bit more work but something I am experimenting...

Hmm running for a week using cheap unknown oil is risky IMHO. You need to use at least trusted brand oil within the range of viscosity for your engine.

the second part, I would suggest using a mineral HDEO instead.
Eg. Rimula R4X, BHP Trans Super, Petronas Urania

Just use quality synthetic engine oil and change it as per maintenance schedule, never have to use flushing oil, unless you like to flush your money down the drain.