[allblackeverything435D]

Hi All,

My 435d (6 years, approx 55k miles) is booked in at a main dealer tomorrow for an oil and microfilter service. They called me today to offer an EDT (Engine Decontamination Treatment) oil flush for an additional £190 or so.

They also text me a video with more info:
https://drive.google.com/file/d/1z89...SV&OCID=MY01SV

I'd never heard of this, or been offered it before. A quick Google suggests numerous positive reviews, although many of these seem to be from garages offering the service.

Has anyone had this done and would recommend it?

Thanks in advance.

[Eddamoo]

190 quid... Wow.

Rather than using fancy tech to get another 100ml out, I would personally use the money to service it twice as often. You'll never get sludge with 7k intervals.

[Watsey]

You could achieve pretty much the same thing by using a traditional engine flush treatment. There are several established brands in the market including Liqui Moli and Archoil. They typically cost £10-20.

I use an engine flush additive each time a I do an intermediate oil change - every 7K or so.

These flushing additives are added when the engine is at full operating temperature and the engine is then allowed to idle for around 20 minutes.

They key is never to drive the car when the flushing additive is in the system - it has powerful cleansing agents which dissolve deposits and hold them in suspension, however, they also thin the oil and reduce its protective properties under load.

The old oil is then thoroughly drained, oil filter is replaced, and fresh oil added as per normal.

No way I'd pay £190 for an equivalent treatment in addition to the cost of the oil service.

[planemad]

What a load of tosh

[Craig-SM]

Originally Posted by Watsey

You could achieve pretty much the same thing by using a traditional engine flush treatment. There are several established brands in the market including Liqui Moli and Archoil. They typically cost £10-20.

I use an engine flush additive each time a I do an intermediate oil change - every 7K or so.

These flushing additives are added when the engine is at full operating temperature and the engine is then allowed to idle for around 20 minutes.

They key is never to drive the car when the flushing additive is in the system - it has powerful cleansing agents which dissolve deposits and hold them in suspension, however, they also thin the oil and reduce its protective properties under load.

The old oil is then thoroughly drained, oil filter is replaced, and fresh oil added as per normal.

No way I'd pay £190 for an equivalent treatment in addition to the cost of the oil service.

Sums up my thoughts. I do the same as you but add some oil prior to putting the sump plug in just remove any last remainder of old oil. Then plug back in and fill.

Some of the claims for this treatment I’d take with a very pinch of salt. Just the same as the Carbon Clean claims.