To flush or not to flush

[Funkyboy]

Any thoughts on the benefits of doing an engine oil flush when changing the oil? Car has always been serviced on time now coming upto 6 yrs old on 50k.

 

[RhodieBill]

I do it as a matter of course. But of course opinions differ. I usually use Wynns or Liqui Moly Engine Flush Plus.

 

[bembo449]

no harm in it but personally , if the car is service per the schedule then why bother ?

 

[Gazwould]

Can cause harm as can losen crap that can block the finer oil galleries .

Chose a detergent based over a solvent one .

Or just change the oil twice within 2 weeks then every 6 months or year depending on use .

 

[rorywquin]

My wife insists that I do.

 

[Tony Dyson]

I change my oil between scheduled services and would rather have the dregs of a genuine engine oil mixed in with the fresh rather than a flushing agent regardless of it's constitution, if I felt the need to flush I'd seriously consider using engine oil.

 

[Ron240]

My wife insists that I do.

They also insist on the seat being put down.

 

[malcolm E53 AMG]

No need with modern fully synthetic oils they are so thin anyway early changes are always recommended for short journey cars as fuel contamination doesn’t get burnt off

 

[Wighty]

I change my oil between scheduled services and would rather have the dregs of a genuine engine oil mixed in with the fresh rather than a flushing agent regardless of it's constitution, if I felt the need to flush I'd seriously consider using engine oil.

Ooo I like that idea

 

[Tony Dyson]

Ooo I like that idea

You should consider going into the oil supply business Wighty?

 

[daibevan]

When mine was new it hadn't had many changes. So I did a flush with Wynnes, put in a cheap oil and a new filter and run it for about 100 miles. Dropped the oil & filter and then refilled with decent oil & a new filter. Since I have changed more often than recommended, (5000 miles or once a year, which ever comes first) but I do have a M271 engine & do lots of short trips.

 

[robin.large]

I don't flush. Modern synthetic oils changed regularly just don't need it. If you subject the engine to extreme use, just change more often.
For diesels consider the addition of Kleenoil bypass filter - if you have any space!

Sent from my ONEPLUS A5010 using Tapatalk

 

[sonic]

In 53 years of car ownership I have never had an engine failure, & I normally keep them to over 100K miles. I just change the oil & filter as per the service schedule.
The worst I have had was my wife's Renault Clio 1.4RT head gasket failed at about 40K miles. She was driving to a wedding in Scotland, & I was in Germany.

 

[Ron240]

In 53 years of car ownership.

Wow this must make you at least 70
Respect to the old timers
I am the same age as your car ownership period.

 

[mioba]

There is actually two types of flush.

One is using a flushing oil which is very thin and you replace all the oil with this and run the engine then empty it all. This is would not entertain with modern synthetics which suspend most particulates anyway.

The other is an additive, like a can which you pour in the existing oil again run the engine an empty it all.

I use the additive one every couple of oil changes. Liquid moly pro line, its a bit more expensive but I do believe you do get what you pay for. When my oil drains then I do all the other bits (filters, wipers, etc) and go for a cup of tea so I really like to let it all drain out as much as possible.

 

[mioba]

Wow this must make you at least 70
Respect to the old timers
I am the same age as your car ownership period.

Experienced I would say

 

[keefysher]

Wow this must make you at least 70
Respect to the old timers
I am the same age as your car ownership period.

Experienced I would say

Cheeky upstart, I'd say

'kin youngsters