Can K11's Be Diesel Flushed?

[MrMigs08]

Just flicking around on the forum at stupid o'clock really since i can't sleep but,

When i owned my fiat, the 1.6 engine globally used in the mareas, stilos, bravos, bravas (Oh you get it...) could actually be nicely idled with diesel in the sump instead of oil to give it a nice clean de-carb which worked pretty effectively (Since diesel is also partially a lubricant),

I spotted my sludge thread earlier and while i no longer have to deal with that issue (New micra ftw) it'l be nice to be able to deal with trashy oil quicker and with the CG's being such strongly built engines, i'm wondering if anyones actually tried this yet?

The Fiat article/guide on the forum follows :

Diesel Flushing:-Flushing engines with diesel is, from what I can make out, an 'old skool', but very effective, way of 'decarbonising' an engine. Diesel is a lubricant so it wont damage an engine if used correctly. If the oil pressure telltale on the dash is extinguished then there is enough oil being lifted by the oil pick-up in the sump and it is creating enough pressure to enable no contact between the shell bearings in the engine. If the telltale is illuminated then there is not sufficient oil pressure being created and terminal damage can occur. In this case the revs must be increased to the point where the telltale is extinguished (possibly around 800/1000RPM, every engine differs).

This is an unrecognised procedure through all dealers as it will invalidate the warranty of any parts concerned, also because the Diesel oil falls well below any viscosity recommendations made by Fiat for engine lubricants. If you decide to carry out this procedure it is solely your choice I will take no responsibility for any damage caused by or as a result of this procedure. I dont know how good this will work on turbo conversions or non standard internal engine parts.

When working with diesel or any fuel and oil please be careful not to expose bare skin for prolonged periods of time as most solvents and oils are carcinogenic and cause irreversible damage to unprotected skin. I would suggest using nitrile gloves as these don't disintergrate/weaken when in contact with diesel. I also suggest after working on your vehicle to ensure thoroughly cleaning your hands with an appropriate hand cleaner such as Jizzer or Swafega. Take care of your hand you only get two!!

While it does make sense, i have no ideas about diesel properties, nor how well lubricated a CG needs to be to even idle,

Anyone got a spare battered engine lying around :')

Cheers
- Migs

 

[MrMigs08]

Nobody braved it then?

I'l concider it in 2000 miles and report back

 

[mike-f]

personally I've never heard of it being done but if it works for you i might give it a shot haha

 

[baguete]

Just buy a bottle of "Motor Flush"...

 

[MrMigs08]

Diesel can clear it much easier, however the risk is the lubrication and if any large bits move off the engine and clog up oil passages,

My past experiences with Motor flushes is that they don't really do too much. (My last CG10 anyway, did nothing to)

 

[camoxodka]

tbh what pollyp done for my engine is said that i should put some some new cheap oil in and then after about a couple of weeks i should change the oil again because that would flush the engine with the oil and then use castrol gtx that my personal favorite to clean the engine

 

[Lord Lucan]

From a mechanics point of view it sounds like a stupid idea anyway, there are some very good oil treatments available these days and wont pose any risk to your engine. be wary though, in the past i found that even though the drain plugs are generally at the lowest point of the engine they still dont allow all of the old oil to drain properly and consequently alot of the heavier ****e gets left behind (toyota 12v engines that we raced are especially prone to this). We always get them nice and hot with the treatment in and then remove the sump immediately, along with the pickup pipe and allow the engine to drain away. You will be surprised how much crap is in the sump. Obviously doing this in a road car every oil change is not practical but its worth doing just once every few services. The pick-up pipe is often overlooked and can cause catastrophic engine damage. In fact, certain car manufacturers nowdays recommend this at every oil change. Using the best quality oil of the specified type is the best thing you can do for your engine, especially the cg engines with their timing chain setup, will pay dividends in the long run

 

[Ed]

Pointless/bad idea, Just put in some cheap oil drive for an hour and then drain to put in some better new oil. Thats all I'd do

Never used ANY oil additives (and never will). All my cars have looked fine, and perfectly clean with regular decent oil changes. Nothing more needed.