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Diesel Engines 2 Stroke Oil in Diesel

As long as its not an old banger!

I actually got it for the chainsaw, but I think I'll give it a shot in the derv. I'm currently returning 29mpg, amazingly...but its hot weather.
 
I don't claim that the two stroke oil is responsible but for the first time I have used my LR enough to be able to calculate the MPG accurately and it returned 30.79 MPG over a tankful. I'm very pleased, I reckon on a long run it would probably do 35 MPG. (109, 200Di with Roverdrive, just local driving).
 
I think tis is very interesting. I used to run redex in pertol engines and it made a big differnce. Its very likely 2 stroke in a diesel will do the same. It will stop carbon build up and cut friction, but it will smoke more as the oil burns. My bet is that the lube content of diesel has gone down to cut smoke to meet emissions regs so we now have put it back!
http://cliffordpower.com/wp/wp-content/uploads/2010/08/CP_info_sheet_26_low_sulfur_fuel.pdf
(note at the end it says low sulfur fuel has 1% less energy - bet they don't charge 1% less)
 
Just found this:
http://www.ag.ndsu.edu/news/newsrel...ra-low-sulfur-diesel-fuel-affects-lubrication
What interests me is the positive effect of vegoil on lube qualities. My daily driver merc is now 60,000miles on 100% veg oil so it will be intersting to know how its wearing (total miles 225,000). As I buy vegoil in buk at around 69p ltr this could be a good additive in the Perkins 4.203 in the Landy. I won't run the Landy on straight veg oil as it does too little mileage - veg oil is a natural and goes off if not used.
 
Morning all, Just seen this thread and interest me considerably not so much from the MPG point of view (while improvements are a benefit, who runs a landy for for economy!) but more for positive maintenance effects. Just bought a Disco 2, TD5 ES (just as in yesterday) after a too long break from landys. My only concern was mentioned earlier in this thread and I seek advice on this point, what effect if any does this have on the cat. If as stated earlier the emmisions are better.

Right, I have just had the MOT test carried out on my 300tdi discovery- at the same test centre on the same emission tester and the results are lower with 2stroke oil added. I am still running with added two stroke oil, the result last year was 0.89, this year was 0.77
I am still achieving better mpg with the added 2stroke oil.
Click to expand...

I am guessing the harm to a cat can't be that considerable. What are others thoughts on this.
 
Last edited by a moderator:
Best thing to do with the CAT is remove it, buy the earlier exhaust down pipe without the CAT and fit that instead!
Then cut the pipe off either side of the cat take cat to the local scrap yard and sell it. This will give you a small improvement in MPG for a start. You can use 2stoke before you do that and it will not have any affect on the cat.
The other thing I suggest is to remove the EGR valve, blank the exhaust off and replace the valve with a strait pipe (kits are available from many places now) When you have done that take the sensor out of the inlet manifold and clean the crud off of it that's come from the EGR valve.
Both of those mods with show an improvement in MPG, if it's not had an injector harness for a long time I would change that too.
Please introduce youurself & your new disco on the Discovery forum and welcome to Landrover ownership again! ;)
 
robwlondon said:
I think tis is very interesting. I used to run redex in pertol engines and it made a big differnce. Its very likely 2 stroke in a diesel will do the same. It will stop carbon build up and cut friction, but it will smoke more as the oil burns. My bet is that the lube content of diesel has gone down to cut smoke to meet emissions regs so we now have put it back!
http://cliffordpower.com/wp/wp-content/uploads/2010/08/CP_info_sheet_26_low_sulfur_fuel.pdf
(note at the end it says low sulfur fuel has 1% less energy - bet they don't charge 1% less)
Click to expand...

I think the biggest issue is the 7% added bio-ethanol in modern low sulphur diesel. We pay enough for fuel anyway yet it's diluted with more rubbish that will burn with the fuel.
 
Tom Mepham said:
Best thing to do with the CAT is remove it, buy the earlier exhaust down pipe without the CAT and fit that instead!

The other thing I suggest is to remove the EGR valve,
Click to expand...

Fully agree with this; it's what I did with my Mark 4 diesel Fiesta... fitted a Mark 3 ex manifold which enabled me to discard the useless EGR as well. Fuel consumption dropped from the mid 40s mpg to around 50 mpg. I have to admit though: it is a bit smellier now than it was before, that damned cat must have been doing something but I won't be going back to it... By the way: it passed its MOT with the new set-up without a comment. I can also say: the car is running better than it ever has before.
 
I'm now running our 2.2 tdci transit with 2stroke in the diesel with no detrimental effect. It has only covered 28,000miles from new and is just out of warrantee , yet again the engine is much smoother, particularly notable from cold.
The high pressure common rail system dose make awful diesel knock from cold but it is now much smoother. Ford injection pumps are weak so I am hoping that the extra lubrication will help give us problem free service.
 
resurecting an old thread, Wallace has been a bit 'sooty' of late, ....svo blend and short trips, so put 300ml in and filled it up with dino......as said, much much quieter , even more than with svo. Initially gave it a good thrashing and it was quite black out the back, for the first blast, now all clean, even full throttle on full load, its clean. see how the mpg changes , if at all. Still confused about the red dye tho, you know.... if you get stopped.?
 
Thats where I buy it! Yes Comma is green. My 300tdi has now covered over 20,000miles running with 2 stroke and i'm still adding it to every tank full.
 
Marc Lurie said:
I have kept an absolutely accurate record of every litre of diesel I've put in my 300Tdi since I bought it new in 2006. (13368.56 liters :yikes: and 108848km) so I have real data relating to my fuel consumption over the past 7 years.

I'm going to add 500ml of two stroke every time I fill up which should even out at around 200:1 ratio in my 125 liter tank (because I usually don't run it to empty), and continue to keep accurate data and I'll see what happens in a year or two.

That's about as scientific as I can be, but it should be fairly definitive.
Click to expand...

Hi Marc, well its 2 years on now, how did this pan out with your mpg calculations, over the long term. Was there a gain in mpg or not.?
 
bit of an update, put 2 stroke in last 3 tank fill ups, 1st tank , hauling heavy rubble back and forth, 230 ish miles, 30.26mpg slightly up.
2nd tank , mot thrashing to clean it out, 210 ish miles , 29.56mpg,
last tank, 265 miles ish, with 5 ltrs svo, and 200ml 2T, first tank normal sensible driving again, 32.08mpg. Too earlyto tell yet tho if its a permanent increase.
 
yostumpy said:
Hi Marc, well its 2 years on now, how did this pan out with your mpg calculations, over the long term. Was there a gain in mpg or not.?
Click to expand...

Marc doesn't seem to have posted since 2014, I hope he still looks in occasionally and sees this; I would like to know too.
 
Just read through this thread with interest.
l was told by my local LR Specialist not to put two stroke oil in the fuel with a TD5, as it could damage the high pressure fuel system. Anybody have any experience running a TD5 with added two stroke oil?
 
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