They haven't done the service yet. I'm inclined to think it's a money maker. I doubt that the engine will be sludged up after 12000 miles from new. The person trying to sell me this was a female receptionist.

in my opinion it is a bad idea unless the engine really needs it, which is doubtful on a new engine and would give it a miss as a certain amount of chemicals are left behind in the nooks and crannies of the engine, this will not do the new oil any good and could cause unnecessary extra wear on the engine as the chemicals will affect the new oil

They haven't done the service yet. I'm inclined to think it's a money maker. I doubt that the engine will be sludged up after 12000 miles from new.

There should be a performance reason for an engine flush, so ask what it is. I suspect the lady receptionist is under orders always to offer such 'benefits' as a small profit-maker. Some older cars (and owners) might fall for it.

They haven't done the service yet. I'm inclined to think it's a money maker. I doubt that the engine will be sludged up after 12000 miles from new. The person trying to sell me this was a female receptionist.

Sounds rather like the checkout people at my local Icerland trying to sell me sweets and cakes when I pay for the rest of my shopping.

For a car that new, I can't see any benefit, and as other have said, there's good reason why the practice which seemed to gain popularity in the late 90s fell by the wayside in the 2000s - because the practice appeared to dislodge deposits in older cars but not get rid of them, leaving them to gum up something far more important.

Keeping an eye on the condition of the engine oil and changing it either by condition or by age/mileage (whichever results in the soonest change) should always be followed, as should the manufacturer's recommended oil type.

If something (other than extra oil changes) is done that isn't recommended, it could invalidate the warranty if something goes awry later on. I'd also suspect that the main dealer won't include this 'extra' as part of the service Ts & Cs wise - rather it'll be 'the owner's decision' as to whether to accept it and the dealer takes no responsibility for blah, blah, blah consequences' in the small print.

I'm presuming that the previous (old) reason why cars had an 'early' oil change at (say) 1000 miles after new has disappeared due to the use of semi and fully synthetic engine oils and better quality manufacturing techniques that don't leave (anywhere near as much) swarf etc in engines after they are built/assembled.

If this engine uses a wet belt camshaft drive system, then you certainly do not want an engine oil flush.

The Renault HR13DDT 1.3 has a timing chain.