Two stroke oil in diesel

[stevenlizuk]

http://www.freel2.com/forum/topic878.html

Anyone seen this previously?
I'm going to fill up later and give it a try.
Got a mate who is a mechanic and he's said it wont do the cat any harm which was my 1st concern.
He'll be fixing it if it kills it so we'll see what happens .

Thoughts?

Steve

[DiscoPol]

Very interesting,

wish i had a little more time for others on here to test bed this on their motors before i set off across Europe in a couple of weeks,

Steve keep me informed on your progress with this one, if it works im more than willing to get involved with a little testing and reporting back, I just dont want to go adding it just prior to a very important long journey.

Would be just my luck for it to do more harm than good and end up stuck at the side of an eastern european road in a cloud of smoke and a very angry wife chewing on bits of me that dont need chewing on:shock:

Im all for additives as the fuel across just our domestic suppliers varies so much let alone across europe, i just wish somebody could give a definitive answer on which was best on bot cost and value, ie quality of fuel.

But my thought are "go for it, and let me know"

Good luck

Dan

[Welly]

Apparently the HDi can enjoy a bit of oil in the fuel from time to time and some places will slosh in a litre of engine oil to free-up sticky fuel pressure return valves.

It kinda makes sense to have a more oily fuel (to a point).

Wonder who'll be the first to try it in their HDi?

[jasper5]

I've seen this debated before on a couple of forums, including the 407 forum, most people seem to be positive about it, some people use it in their HDi.

Would I use it? .....No.

[stevenlizuk]

I'm still glad I've got a D8

[Littlelad]

The reason the engine may sound a little quieter will be because it is dampening the detonation of the fuel mixture this will almost certainly create problems with the fuel mapping of the ECU since this is set based on known critical cetane values of standard diesel. This example is based on the Germans using biodiesel which is already causing reliability concerns amongst fleet operators over there. I would not like to speculate what a combination of 2 stroke oil and biodiesel would do to long term use in these conditions but the diesel engine manufacturers are having a tough time as it is meeting new emmission standards using Adblue etc without complicating it with amature use of two stroke oils. Apart from NOx the actual cleanliness of diesel engines has never been better - very little ash and laquring deposit on pistons and valves means that decoking is a thing of the past. The most important thing to adhere to is use the best engine oil and change the filters earlier rather than later and never use flushing oil. The thing is he did not mention the high cost of 2 stroke oil !

[stevenlizuk]

I doubt that 500ml of oil in 50l of diesel would have enough of an effect to be noticed by the car with such a variation of qualities of diesel being available.
It certainly isn't going to dampen ignition levels to where it's noticable just by listeneing as the power loss would be noticable when driving.
No-one is reporting power loss and most are reporting better fuel economy, not an idicator of poor fuel ignition.
It's also woth noting that most Uk bought diesel at the moment contains some degree of biodiesel in it as it is does it not?

[TopDonkey]

I've been adding 2 stroke oil at a ratio of half a litre to 80 litres of diesel every other tank, i've been doing it for 3 years now on 2 cars and i do notice more power ( no change to the economy though) and the engine is significantly quieter too, especially the injector solenoids as they tick away like made on my wifes pug 2.0 807 hdi 16v

[steve_earwig]

Oooh, good one, I was wondering if it's worth trying on my rattly tank because of the ticky injectors, I have about half a litre of Jonsered's finest minineral left from last year too

[BruceT]

Interesting. Not another 'snake oil' though?

[TopDonkey]

Its not a special oil, its simply bog standard 2 stroke oil, chose for its low ash content and the fact that its designed to be burnt in an engine unlike 4 stroke oil

I primarily add it to increase the life of the tank pump motor, and the high pressure pump and the injectors, lubrication especially to the high pressure pump is marginal at the best of times, and keeping it better lubed will extend its life significantly

[mark21TD]

It's also woth noting that most Uk bought diesel at the moment contains some degree of biodiesel in it as it is does it not?

Sence sulpher was removed from diesel they have been adding 2.5% bio-diesel to regular diesel, this is to replace the lubrication that was lost by the lack of sulpher.
Now the bluberment have increaced the mimamum amount to 5% bio for emmitions purpusess, so all those that knock bio-diesel are running a small amount of it all the time
And in the future the % will get higher.
Even the F1 teams are having to run (I think) 7.5% bio-ethanol this year, so even they can't get away from biofuels.

As a side note PSA warrantee there HDI's to run on 30% bio, many are run on 100% without problems, and VAG cars are warrantied to run on 100% bio.

Bio containes less energy than normal diesel and the engines run fine, so I don't think there is any problem with adding a small amount of 2 strock oil.

[stevenlizuk]

200 miles so far into the experiment and the car does seem to be a little quieter and idle a little smoother.
Get an injector cleaner through it fairly regularly so it's not simply a running cleaner issue but does seem to be a result of adding the oil.

The experiment continues.
Car currently outside on three wheels as I'm trying to get the abs sensor out of it to swap it, so far not fun.

Steve

[Littlelad]

I doubt that 500ml of oil in 50l of diesel would have enough of an effect to be noticed by the car with such a variation of qualities of diesel being available.
It certainly isn't going to dampen ignition levels to where it's noticable just by listeneing as the power loss would be noticable when driving.
No-one is reporting power loss and most are reporting better fuel economy, not an idicator of poor fuel ignition.
It's also woth noting that most Uk bought diesel at the moment contains some degree of biodiesel in it as it is does it not?

This is exactly my point that if you are right then the dilution will make no difference even if I'm wrong. The problem with biodiesel is the higher content of water and the ability of it to perform in colder weather. The rings are more likely to gum up under certain operating conditions and it is not cheaper than regular derv even without the addition of 2 stroke oil. I was surprised and concerned to learn from this post that any bio diesel is being added to our regular derv so I'm making enquiries since I've not seen any official notice. Also sulpher is not a lubricity issue with diesel so the reduction should not affect that element.

[mjb]

I doubt that 500ml of oil in 50l of diesel would have enough of an effect to be noticed by the car with such a variation of qualities of diesel being available.

Would you drink from a 50l container of water that has 500ml of hot chilli sauce in it? Even mid-range sauces like Dave's Insanity Sauce would make a significant difference to the breathing and digestive systems of most people if you ingested it at that ratio... The noise would change too