Thread: Petrol V Diesel Ongoing Fuel Running Costs

Originally Posted by Rich84

Found this photo that I took last year.


See attached


SE Freeway run between Murray Bridge and Mt Barker sitting at a constant 110km/h.


Car does similar on runs to Melb and back.


TDV6 RRS, no offroad extras, 20's with road rubber, 450ml 2-stroke oil per fill.

2stroke oil in the fuel tank? Im intrigued?

Originally Posted by nat_89

2stroke oil in the fuel tank? Im intrigued?

It's basically a lubricant that may or may not have some impact on the noise of diesel ignition delay.
Some people swear by it, other's don't bother.

Originally Posted by Dougal

It's basically a lubricant that may or may not have some impact on the noise of diesel ignition delay.
Some people swear by it, other's don't bother.

My experience has been positive with it.


-Slightly lower fuel consumption.
-Engine slightly quieter.
-I monitored the carbon on the MAP sensor (I clean it every service) from the EGRs before 2SO and then after. Definitely less carbon after using 2SO.
-One unreal difference is the EGR's themselves - after not using 2SO for a while, my EGRs start to make a weird noise (when they're operating) that sounds like a bunch of cicadas has descended upon the engine. After about 1000km of driving with 2SO that noise mostly disappears. I admit I haven't used it for a little while and the noise has slowly returned. I will be getting back on it ASAP.
-Less smoke or no smoke when booting it. After not using it for a while and easy driving, my car characteristically will emit a cloud of black smoke upon booting it.
-If this is all the case, I assume there is a similar effect on the combustion chamber and turbine housing.


I saw a pic of a TDV6 stripped down by a guy in South Africa after it had spun a bearing. He had been using 2SO in his diesel - no carbon to be seen inside the cylinders!


It's well documented, try searching for 2 stroke oil or 2SO in diesel.

Originally Posted by Dougal

It's basically a lubricant that may or may not have some impact on the noise of diesel ignition delay.
Some people swear by it, other's don't bother.

Originally Posted by Rich84

My experience has been positive with it.

Thanks for that!!

-Slightly lower fuel consumption.
-Engine slightly quieter.
-I monitored the carbon on the MAP sensor (I clean it every service) from the EGRs before 2SO and then after. Definitely less carbon after using 2SO.
-One unreal difference is the EGR's themselves - after not using 2SO for a while, my EGRs start to make a weird noise (when they're operating) that sounds like a bunch of cicadas has descended upon the engine. After about 1000km of driving with 2SO that noise mostly disappears. I admit I haven't used it for a little while and the noise has slowly returned. I will be getting back on it ASAP.
-Less smoke or no smoke when booting it. After not using it for a while and easy driving, my car characteristically will emit a cloud of black smoke upon booting it.
-If this is all the case, I assume there is a similar effect on the combustion chamber and turbine housing.


I saw a pic of a TDV6 stripped down by a guy in South Africa after it had spun a bearing. He had been using 2SO in his diesel - no carbon to be seen inside the cylinders!


It's well documented, try searching for 2 stroke oil or 2SO in diesel.

Interesting ill have a look into it. Although i haven't noticed much smoke at all from my SDV6 D4

Originally Posted by Rich84

It's well documented, try searching for 2 stroke oil or 2SO in diesel.

My First google search found this.

Adding 2 Stroke Oil to Diesel

No doubt other searches will give a different viewpoint

Ah, the internet - don't you love it.

Martin

Originally Posted by letherm

My First google search found this.

Adding 2 Stroke Oil to Diesel

No doubt other searches will give a different viewpoint

Ah, the internet - don't you love it.

Martin

When I said well documented I should have said "well talked about" haha!


When I last researched it the web page with details of an unofficial test Mercedes Benz did with E320 CDI's running 2SO was one of the top items in google. I can't seem to find it now. Their conclusion was that it is beneficial.


I can point out my own positive results from running 2T for 50 odd thousand km, and as per above you can see my TDV6 is running very efficiently, but there will always be differing viewpoints of course - if only I had a dollar for every person who doesn't agree with my ideas - I'd be rich beyond my dreams!

Originally Posted by ADMIRAL

Hi Bob

HiThat's a coincidence, I was in the same area for the Australasian Safari rally about the same time. What were you doing up there ?

Neil

Neil,

We did a trip towing my Adventure camper trailer converted to independent air suspension over 9 days. Did Paynes Find, Wooleen Station, Kennedy Ranges, Mt Augustus, Murchison Off Road Park and back to Perth. The only bitumen was Perth to Paynes Find and MOR turn off to Perth, all in convoy with my son in his TDI 300. Great part of the world with camping as remote as anywhere in Aus.

As for fuel consumption, I struggle to get better than 12.5 in any conditions in my 2010 3l D4 SE.

Bob

Originally Posted by BobD

As for fuel consumption, I struggle to get better than 12.5 in any conditions in my 2010 3l D4 SE.

Bob

I suspect some people here are talking litres/100km and others talking km/litre.