Is it safe to use engine flush on 4 year old car?

[b92753]

Mercedes sell an engine flush to add with the oil before changing oil. Is it safe to use?

 

[DRBC43AMG]

Why would you want to flush the engine on a 4 year old car? If you have respected the oil change intervals and used the prescribed oil, I don't see the reason to flush the engine, not unless something is wrong with it. It's a waste of time and money IMO.

 

[Pendragon]

Why would you want to flush the engine on a 4 year old car? If you have respected the oil change intervals and used the prescribed oil, I don't see the reason to flush the engine, not unless something is wrong with it. It's a waste of time and money IMO.

Totally agree.

 

[b92753]

When the car was In for service at the dealership the service guy mentioned the flush was designed for new vehicles and ensures the engine remained clean by using it at every oil change?

 

[Dieselman]

It doesn't matter how many times you say it, you're wrong...


Spam reported.

 

[Dieselman]

I think using an engine flush is a good idea for keeping finer parts free of contamination, which does build up.

 

[John]

That's easy for you to say...

 

[Dieselman]

Brace yourselves Guys. PM spam on the way soon...

 

[carat 3.6]

Banned! :bannana:

 

[andymerc]

I started in car trade in 1985,always dead against flush found a good product about 18 months ago realy pleased with results I get.Now engine are going longer periods/miles between service worth using a flush.

 

[BlackC55]

We use flush sometimes here. I think it it worthwhile and I have always used it on my cars.

We had a 320CDI that had poor starting and low compression. An oil and filter with flush sorted that out.

 

[greyboy]

Surely the main issue here is not the fact that the car is four years old, but how many miles its done and how many oil changes its already had.

For example it could have done 120k miles and had only 3 changes in that time and the engine could be dirtier internally than one of 30k miles where the owner has changed the oil annually.

Also petrol or diesel? In this case it's a C200 so maybe a cleaner engine than a diesel, internally.

 

[markjay]

It's a bit of a paradox..

If the engine is dirty because oil change intervals were ignored in the past, you mustn't flush it for risk of getting sludge in the oil passages and causing oil starvation and engine damage.

If the engine is clean because the car has been services properly then you can safely flush it.

So it seems that you can only use it if you don't actually need it.....?

 

[b92753]

It's a bit of a paradox..

If the engine is dirty because oil change intervals were ignored in the past, you mustn't flush it for risk of getting sludge in the oil passages and causing oil starvation and engine damage.

If the engine is clean because the car has been services properly then you can safely flush it.

So it seems that you can only use it if you don't actually need it.....?

The car had done 25000 miles and has been well kept. In gourd years its had about 6 oil changes. Couple in the first year. So service schedule had strictly been adhered too.

Mark i totally agree with you!!! The reason why I ask the above question is alot of people tend to use engine flush when it's too late I.e when sludge has already built up in large amounts. So was really enquiring weather it would be safe to use it on a relatively well kept engine to which I have got the answers now!

Basically From the above posts i gather it would be a good idea to use on an engine which has been well kept in order to keep it that way just as the service advisor told me a year ago but wanted £30.00 for a bottle that only costs £6.00 at their parts dept lol

 

[millo777]

I've had better results using flushing oil vs the products that are added to the old oil. I used to use "Comma flush out" on old prv v6 engines which have very narrow oil galleries and it always did a great job. I've also recently used carlube flushing oil from ecp on my w124 which removed an alarming amount of sludge.

 

[spanner]

I used it once many years ago. two months later the car was back with knackered camshafts. Never used it since. (M110 engine).

 

[Dieselman]

I've had better results using flushing oil vs the products that are added to the old oil.

I agree, but it's more work and you need to ensure all the flushing oil is removed.

I once flushed an old ford Escort van with a neglected CVH engine and black solid particles came out of the sump plug with the flushing oil.
No problems after the flush, though.

 

[shorty]

I had an engine lock up due to an engine flush .

The flush dislodged large pieces of carbon and one of these flakes blocked an oil feed to a balancer shaft baring . The shaft seized and caused the chain to break and lock-up the crank .

I was against using the flush in the engine , but was persuaded by a mechanic/friend , ill never use one again

 

[b92753]

Used engine flush today and did an oil change! When checking the oil before the oil change via the dipstick the oil was clear. After the engjne flush had done its work what can I say the oil came out black and the engine is so much smoother and quiter! But while dojng the oil change noticed the front driver side suspension torsion arm was snapped in half so it's in the dealership to have it replaced!

 

[MLAM]

Did you find out what brand of engine flush was used?