Liqui Moly Engine Flush - opinions/experiences?

[g3org3y]

Opinions on this?

Seems to be considered the best on the market. Some quite positive reviews on YouTube.

Have also heard some scare stories of the flush shifting sludge that consequently blocks a critical line/passage leading to epic engine failure!

What do you guys reckon?

[Steve H]

Liqui Moly stuff is generally very good but I would question the need to flush oil nowadays unless you have a particular reason to?

[steveo3002]

id expect it to do a decent clean inside the engine , im wary of claims it cures knocking /rattles /smoking etc etc

a well maintained engine shouldnt need it

[GreenV8S]

g3org3y said:

Have also heard some scare stories of the flush shifting sludge that consequently blocks a critical line/passage leading to epic engine failure!

There shouldn't be any significant amount of sludge, but if there is any I'd rather it stayed where it was rather than being carried into a small oilway and potentially blocking it.

[Yabu]

steveo3002 said:

a well maintained engine shouldnt need it

Watching a YouTube video about this last week and I think it mentioned egr valves putting stuff back through the engine which built up before going back through the combustion chamber, I’ll try and find the video.

[steveo3002]

whats the reason for wanting to use it ? if the oil changes have been neglected then the damage is done

bit of black on the metal parts isnt really hurting anything if its running fine

if its caked in black gunge then i would have the rocker and sump off for a proper clean , then more frequent oil changes in the hope if cleans up a little