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Engine oil flush. Yes or No?

Dayvo

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It would be good to have a look inside your engine to see if there's any sludge or crap built up first.
But you would have to remove a rocker cover at least to see anything, or stick a mini camera up the sump plug hole.
I've never bothered to use one...
I was thinking about taking off the rocker cover but looks like a prick of a job , not like back in the day where you just remove 6 bolts and job done .
 

greenacc

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Agree with you there. That's the problem, you might be flushing an engine that doesn't need it, and if it's full of crud a flush is probably only going to remove 20% of it. The oil pickup is probably the thing it's going to clean the best as it's going to be bathed in it in the sump.
Just go by the colour of your oil if it's black and goes black quickly you've got a dirty engine.
Also choose an oil with strong long lasting detergents.
 

Dayvo

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Agree with you there. That's the problem, you might be flushing an engine that doesn't need it, and if it's full of crud a flush is probably only going to remove 20% of it. The oil pickup is probably the thing it's going to clean the best as it's going to be bathed in it in the sump.
Just go by the colour of your oil if it's black and goes black quickly you've got a dirty engine.
Also choose an oil with strong long lasting detergents.
It has been serviced by the book plus had additional oil changes inbetween so i guess ill give it a miss . Thanks everyone for your input .
 

VS_Pete

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It has been serviced by the book plus had additional oil changes inbetween so i guess ill give it a miss . Thanks everyone for your input .
That`s what I do too. 7500k :beer chug:
 

MYVESSV8

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have flushed mine always since I have been doing the services (for 100,000klm)after warranty ran out, flush is only $12 so no biggy), used penrite oils, doesn't get that dirty, discoloured but not black as such,
 

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I use the nulon flush every 3 or 4 changes, never had a problem with any car doing so, but I don't let them sludge up too.
new oil every 5k is a lot cheaper than a clagged engine in 100,000k or so
 

Elanthea Taueki

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Hi all just enquiring would i need to do a oil change if hubby put about 3/4 cup of water in oil compartment after realizing what he had done.Then stuck in Helix 15/40 synthetic oil, which the correct oil should have been SAE 5w/30 or 10w/30API SL/SM
 

RiCeY

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Oil change yes for the water.

15/40 won't hurt but its water contaminated now so it has to be dumped anyways, also fit a new filter.
 

EYY

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Yeah don’t run it. Water isn’t a good high pressure lubricant lol.

Won’t do any harm if you dump the oil straight away and put fresh stuff in then get it up to operating temperature to evaporate any residual moisture.

Btw - the oil you used won’t be synthetic. It only states that it uses ‘synthetic technology’. I believe there must be at least 2% (or thereabouts from memory) synthetic base for them to use the word ‘synthetic’ on the packaging.

Bit of a marketing gimmick. Be careful with that. Make sure you get a fully synthetic oil such as penrite hpr5, shell helix hx8 or the 5w30 nulon in the gold bottle.
 

losh1971

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I change my oil every 5k and run an engine flush for 10 minutes at idle before I dump the old oil. You get more of the old stuff out as it thins the oil a little so it drains faster.

Ive clocked over 190,000kms and have no oil leaks or abnormal engine noises. The flush is designed so as to not damage gaskets or seals while retaining lubrication properties.

Im also a Holden Tech and we use the flush on many cars on a daily basis and have not seen any negative results. The only time there is a risk is when the engine is sludged as the flush may dislodge a chunk of sludge which can then block oil galleries or the pickup.
Yepp this is what I have been told by a number of mechanics and engine builders. On all our almost new cars we've had, the dealers service them and they always flushed it. My bro in law uses flush in his workshop and mates who are mech's working on European cars used flush in the workshop. If my car had been flushed since new I would be flushing it now. But I don't know the service history so won't risk it, in case I block my pickup screen.
 

greenacc

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That seems to be a common concern re blocking the pickup. Kind of fuzzy logic to me tho as you'd expect the flush to clean the pickup as well and if there's that much crap in your engine then there's good reason to flush it.
But to be honest I don't touch the stuff I just do regular changes with Synpower and haven't had an issue. Fingers crossed!! ;)
 

EYY

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The pickup does become blocked, and it’s very common. Oil is being constantly sucked through the mesh in the pickup - and any solid matter will remain in the pickup regardless of whether you use an engine flush or not. If you use a flush on a sludged up engine, solid pieces of gunk will break loose and can be sucked up by the pickup, further blocking that mesh.

If an engine’s been kept clean and flushed regularly, flushing is fine as a part of regular preventative maintenance. If you’re flushing to try and remove large amounts of sludge you’re likely to do more damage than good.
 

VS_Pete

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Never did a flush on the VS but did get blocked pickup.
If you put your fingertips together that was the size of the ball of **** in the sump.
It was that sticky oil and the 10000k changers previous owner did.
After did 2500k oil changers with flush to motor till clean still going good.
5000k changes always in the VS.
 

EYY

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Depends on the oil you use too. If you use a cheaper mineral oil it’ll break down much sooner than a quality synthetic.

I usually do 10,000-12,500km between services on my vs v8 with semi synth or synth (whichever’s on special) penrite. However mostly highway driving and on lpg too so the oil stays relatively free from contaminants.
 

Elanthea Taueki

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Hi all so my last post was about the wrong oil been put into the car,which was helix15/40 full synthetic Oil light kept coming on .Now was out on monday and the car died,tryed starting it,it shook and could hear klonking sound.Sounded like a truck when driving it.A few guys have said it could be a time chain,pistons something rod.So any info is apperciated just hoping it ain't Stuffed.
 

VS_Pete

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Depends on the oil you use too. If you use a cheaper mineral oil it’ll break down much sooner than a quality synthetic.

I usually do 10,000-12,500km between services on my vs v8 with semi synth or synth (whichever’s on special) penrite. However mostly highway driving and on lpg too so the oil stays relatively free from contaminants.
I changed to ACDelco 20W50 mineral oil which is made by Fuchs.
 

EYY

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Hi all so my last post was about the wrong oil been put into the car,which was helix15/40 full synthetic Oil light kept coming on .Now was out on monday and the car died,tryed starting it,it shook and could hear klonking sound.Sounded like a truck when driving it.A few guys have said it could be a time chain,pistons something rod.So any info is apperciated just hoping it ain't Stuffed.
That’s not synthetic as mentioned earlier.
 
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