actually how often are we required to flush engine? changing oil only is not enough?

More than 50,000 of milelage, should be the time to use engine flush.

one thing i feel discomfort about flushing oil is .. after you drain it, there is still little bit balance of it inside the crankcase. as you may know, most flushing oil is kerosene-based. kerosene shears oil faster. the flushed oil looks very dark because you're flushing using the old oil filter. the flush oil mixed with the crap inside oil filter hence giving the "OMG my engine is so dirty and this thing really cleans" impression. flushing using a new oil filter wouldn't look that dark, unless the engine is stuffed with sludge.

agreed with previous poster, flushing oil doesn't clean carbon deposits from combustion by product.

IMHO, as long as you're using top tier@mainstream oil with proper interval, you engine should be free from varnish/oil related residue. no need to spend extra for flushing.

This post has been edited by kapal: Jun 1 2009, 04:35 PM

but in other way it's not wise 2 use new oil filter also cuz as u said sludge n crab will go thru d oil filter but not all can go pass d oil filter so kinda waste if u use new 1~

pardon me but why flushing using new filter is it a waste? the purpose of oil filter is to trap dirt.

of cuz it's good but u make d new oil filter's life span shorter n sum dirts might harmful stays in da new oil filter during after flush n use new engine oil wit it~

then juz buy 2 new oil filter lor, n use one for flushing n another one for new engine oil..

got at rm98.00 from my member..

agree... i bought 2 oil filters, one for flush then replace with another new one for the proper oil.
besides flushing is not on every oils change, so it's negligble.

that's what i'm trying to say earlier on..

damn, I just did flushing last friday. it was more than 15 minutes. but somehow, feel the engine was replenished to a better state

so after tat throw away? ?

yes cheeann-san, throw the oil filter away. to put it simple:

* drain old oil
* replace oil filter
* pour in some flush oil
* run your engine accordingly
* drain the flushed oil
* replace oil filter

oh,nvm la~
i dun like waste money~
jus flush wit old filter n then 1 time change new filter wit new oil can edi~