Query approved.

@t.a: If you are unsure of what you are doing,don't open up your engine or add anything into it buddy.I would suggest you to visit a mech and have a look at how he goes about doing and you can follow the same next time.If you are just washing your bike and have to get rid of the sludge you can go in for kerosene.

I used diesel to clean my friends xtreme, splendor, pulsar and no problems at all.
Diesel is a moderate solvent and definitely not a strong one that can blow away any seals.
In xtreme before changing the old oil I poured 250ml and rode the bike for a day.
same with splendor.
In pulsar which has been unused for about 4 months I drained all the old oil, poured 750ml of diesel and idled~revv for 15 minutes and drained all the diesel(tar black) and filled with new cheap oil which had to be replaced as well.
The next day when the mechanic opened the case to replace the clutch plates the insides looked super clean, the new cheap oil also catched a lot of dirt and became dark(in just one day).
This is my experience with diesel. If you want any super strong solvent try half a liter of NC paint thinner in oil, but don't ask me what happens.....still to try this on any old vehicle which is nearly dead....haha

Use an engine flush to get rid of the sludge in your engine. Engine flush is made specifically for this and contains detergents in safe and tested proportions to remove the sludge without any detrimental effects.

I'm not aware of using diesel or kerosene to clean the engine of sludge, so wont comment on this part.

P.S. Engine flush is available from OWS and Bardahl.

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Are you serious? Please dont suggest such stuff man, some people might actually try it out.

With the above concoction in your bike, you'll end up with a blown engine. No doubts about it !!!

avoid using strong cleaning materials on a running engine. If you are assembling a new/rebuilt one its different, you can use diesel to wash the parts. The issue is that diesel will/can wash away the lubrication of the bearings, and you can have bearing trouble sooner than later.

Use a good engine flush like STP or Bardahl. Much safer and better.

Hmmm, never heard of such extensive cleansing.
Sounds tempting but scary too.

same here

Even i've flushed my classic cbz using diesel.Its totally safe.While draining diesel,it used to be very black in color.But the aftereffects were really really satisfying.You can go ahead with it.Can pour 900ml of normal diesel in ur crankcase and raise till 3000rpm on every gear obv dont ride ur bike!! Do all this on the main stand

it is strongly suggested to use only branded and reputed engine oil flush chemicals.

using desi tricks can harm your bike, although i have never tried desiel to flush the engine, i will not recomend it.

and please be aware that none of the bike manufacturers recomend desiel as engine flush.

if you open up the engine, then you can use desiel to wash engine parts, but mechanics normally do it with petrol only.

btw, i want to ask a question, what benifit will be achieved by flushing the engine, and i m talking about practical and noticable benifits. while some may claim that it will increase the power or make the engine run smoother, has anybody achived these claims in reality.

the basic rule is don't fix it, if it ain't broken.

All right guys..



I made up my mind to give it a try, by first trying to get kerosene and if not then by diesel.

will sure post the review about it.

@princesirohi First of all piston engine works on the principle of Constant volume. since sludge is quite inevitable these days because of fuel adulteration and riding habits. which intern leave a residue which reduces the volume of the crank case which may case shortage in distance of a piston stroke which is directly proportional to your power output.

So all in all is to clean the sludge, So which does it effectively is the question. however, to my believe if we try out these tricks on an new engine or comparably well maintained engine, the chances are that no results could be observed,
Hence these techniques are only for those which has a residue in the engine.

I would suggest you not to go for kerosene as the Boiling point of kerosene is lower than that of diesel and in case you start your engine , due to the heat and lighter vapors losses, their might be chance of some mishap .

I wonder why are we hell bent on using solvents like Kerosene and Diesel.

See, if it is just to clean the sludge, try using the Professional Engine flush system.

In case of putting Diesel/Kerosene in engine and running it for some time, I wonder did we even think of the damage it can bring to Clutch plates and other vital parts like the bearings, Rockers, cams, timing chain.

Imagine you are using kerosene/diesel in engine and it is acting as an abrasive/ cutting oil...imagine the damage it would bring to the valves, guides and other rubber and plastic parts.

Go ahead and do it, if you dont love your bike, or for that matter if you dont love your steed, why the burden of cleaning it.

If it is for the experiment and in case if you would like to share your feedback/observation of the effects of using Kerosene/diesel/ NC Thinner, am all ears

All cheers- Avoid alcohol
dcs

well I am from a small town and those professional engine flushes are not available at my place, same may be the case with some other people as well. Also engine flush is costly for me.


About diesel, it is not harmful I believe(tested 4 bikes). Other reason-- I tried to clean the carburetor with diesel and the result was apparently disappointing, it did not dissolve any deposits - so definitely a mild solvent.
NC thinner is a super strong solvent, when I sprayed it on the carb using a syringe it took away each and every deposit with it.
Also Diesel has some lubricating properties as well compared to petrol. I cleaned the chain using diesel and it became very smooth and the smoothness lasted for 2 days without applying gear oil. so no fear of losing bearing lubrication etc.
Ofcourse I cannot certify diesel is 100% safe or suggest any one to use diesel just because I did it, but it worked well for me.
Diesel - ok
Kerosene - no
petrol - no no
NC Thinner - dont even think about putting it in engine. but very good for carbs. Once I was out of petrol and the petrol station was far, so I poured NC thinner in the tank and rode it for 3 kms and no problem observed. Call me outlandish

dude take our advise....and dont do it.........