anyone have any experience with engine flush products?

markus037 · 09-10-2014, 06:52 PM

has anyone ever used any with good results? i was thinking about trying some sort of additive before my next oil change to clean some crap out. i know liqui molly makes one that is supposed to break up varnish and sludge but has anyone ever used such a thing?

pavproch · 09-13-2014, 01:42 PM

I flushed the engine during my last oil-change (at 140k - kilometers). N53B30 (EU specs) engine.

Poured a dose of Millers Oils Engine Flush, let it idle for 20min, then drained, refilled with noname flushing oil, let it idle half an hour again, drained, and filled up with fresh Millers Oils nano EE 5W-40. Oil filter done, too.

Driven some 5thousand kms since, no issues whatsoever.

Would not speculate of its positive effects, I simply wanted to have it done.

gbm30 · 11-02-2014, 07:58 PM

Any thing liqui Molly make is good. Don't be afraid to use it.

roundle · 11-03-2014, 01:44 PM

I wouldn't use a "flush". That stuff is scary.

If things are really dirty, I'd use a high-quality Group V Ester-based oil and only keep it in for 3-5K miles. Motul 300v and Redline are probably your best bets. If it comes out filthy after 3-5K miles, I'd run a second cycle.

Just be prepared to pay a premium for the Ester-based oils....

09-10-2014, 06:52 PM	#1
markus037 Lieutenant 74 Rep 417 Posts Drives: Alpine White 2010 328Xi Join Date: Jan 2014 Location: Pottstown, PA iTrader: (0)	anyone have any experience with engine flush products? has anyone ever used any with good results? i was thinking about trying some sort of additive before my next oil change to clean some crap out. i know liqui molly makes one that is supposed to break up varnish and sludge but has anyone ever used such a thing? __________________ ASE Master Certified PA Safety and Emissions inspector
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09-13-2014, 01:42 PM	#2
pavproch Private First Class 9 Rep 184 Posts Drives: Z4 3.0i & 330ixT Join Date: Aug 2011 Location: CZ iTrader: (0)	I flushed the engine during my last oil-change (at 140k - kilometers). N53B30 (EU specs) engine. Poured a dose of Millers Oils Engine Flush, let it idle for 20min, then drained, refilled with noname flushing oil, let it idle half an hour again, drained, and filled up with fresh Millers Oils nano EE 5W-40. Oil filter done, too. Driven some 5thousand kms since, no issues whatsoever. Would not speculate of its positive effects, I simply wanted to have it done.
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11-02-2014, 07:58 PM	#3
gbm30 Private 24 Rep 76 Posts Drives: bmw e90 330i Join Date: May 2013 Location: new york iTrader: (0)	Any thing liqui Molly make is good. Don't be afraid to use it.
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11-03-2014, 01:44 PM	#4
roundle EXPAT 65 Rep 889 Posts Drives: 18 VW GTI;18 CX9;11 E91 N52 Join Date: Apr 2010 Location: USA iTrader: (0)	I wouldn't use a "flush". That stuff is scary. If things are really dirty, I'd use a high-quality Group V Ester-based oil and only keep it in for 3-5K miles. Motul 300v and Redline are probably your best bets. If it comes out filthy after 3-5K miles, I'd run a second cycle. Just be prepared to pay a premium for the Ester-based oils....
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