hey guys... was at supercheaper yesterday buying all the stuff to service the new car and i was wondering bout these engine flushes you put in to the old oil before you drain it... has any one used them

good or bad things to say...

if you change your oil regurly then no need to.
i change mine every 5000-7000kms

They are mostly Kero, just buy kero.

Yeah, I did this to my wifes 1990 Toyota.

I figured that since it was only doing very low kms and not being serviced often enough, it could do with a good clean on the inside.
I actually went as far as doing an oil change with home brand oil, adding the flush treatment, then replacing with good oil.
The flush did clear out a lot of crud.

Unfortunately it was that crud that was keeping the engine sealed inside! So after a new crank case and/or gearbox seal fixed the leaks, my wallet sprung a leak of $700.
I decided it's better to just change the oil & filter rather than flushing it now.

At least that's my experience with a 19 year old car with 120,000kms on the dial.

Cheers, Graham.

They are mostly Kero, just buy kero.

DONT USE KERO!!
Unless you want to spend more money down the track!!
People say use a diesal oil and run it around for a little while and then drain it!!

the engine flush bottle work a treat had a vz 3.6l commo filled 2 the top with water [in the engine] drained refilled plus eng flush cleaned it up perfect

At BMW, we did engine flushes using diesel fuel and sometimes kero until we switched over to the Wurth Engine flush stuff.

If you're going to flush your engine, add the contents to your old oil before the flush (as per the instructions) and then put in some cheapish (e.g. GTX2) to run it in for a few hundred ks. Then drop the oil again and change to whatever oil you normally use.

You'll get the most out of your engine flush that way.

might try that on next service, just dropped all the oil and did filters and refilled with some penrite today

Good job on going penrite mate.

Guys, Kero was fine in an old 186 holden engine that had clearances as big as the rust holes in an old Kingswood but these days is not the same

The good flushes have quite a bit more than just kero, take the wynns and the wurth for instance, they also have conditioners etc that also ensure that not only is the engine cleaned internally the seals do not get dried out by the kero solution

I recommend Wynns if you can get it as have used it for many years.

Wurth is a triumph of marketing over substance. Everything they sell can be found for 1/3 the price and the same or better quality.
All engine flushes are 100% hydrocarbons, read the labels. Use diesel in the amount you would buy in a bottle and never look back. Diesel softens and conditions seals too, which is why injector pumps run forever before they spring a leak.
Clearances have nothing to do with flushing an engine, sludge and carbon build up occurs everywhere except rotating bearing surfaces, so it is irrelevant.

Regards, Andrew.

yeah i remember my brother who was terrible at maintinance lrft his change for like 40,000ks!! he did a flush finally and used the wynns product. the amount of crap that came out was amazing, but 2 weeks later the bigend knock started. we pulled the motor and fixed it did the bearings but i told him if he ever leaves a change that long, ill confiscate his car!!! was a nissan cefiro, RB20E (SOHC 2L 6)

Wurth is a triumph of marketing over substance. Everything they sell can be found for 1/3 the price and the same or better quality.
All engine flushes are 100% hydrocarbons, read the labels. Use diesel in the amount you would buy in a bottle and never look back. Diesel softens and conditions seals too, which is why injector pumps run forever before they spring a leak.
Clearances have nothing to do with flushing an engine, sludge and carbon build up occurs everywhere except rotating bearing surfaces, so it is irrelevant.

Regards, Andrew.

Really,

Sorry but you are very very wrong

If you want to use diesel in your engine go right ahead but please do not encourage others to do your mistake

As for clearances, carbon and gunge gets into every corner, no shit, but that was nothing to do with what I was saying

What I was saying is that on an old engine like a 186 they are that loose that the risk of damage from kero is minimal. In todays engines, with such close tollerances the risk of damage from kero is very high due to the higher pressures etc

Engine flush is good, diesel does not have conditioners in it at all.

Is each to their own but as I said, if you want to risk your engine go ahead, I will stick with Wynns as it has been proven time over time to do a lot more than diesel. Oh and on a final note, it was Wynns after all that drove a Holden across the NT with NO OIL after a flush and Supreme treatment.

I don't think I need to start a war here, but I used to kero flush the TS magna every 6 months or so and i never had a problem with the motor... still running strong at 300,000KM's (just needs a new timing belt)