Thread: Adding 2 stroke oil to diesel fuel

OK guys, hold back, snake oil it is then.  I knew I could rely on you lot to put me straight ! To put a slightly different twist on the discussion, whats the best way of adding some sulphur back into ULSD for the old timer motors that need this for lubrication ? Once you've got the sulphur levels back up (is there a limit ?) do you need to consider what spec of sump oil you use to cope with the new sulphur ? Or is there...

not necessarily the same as what happens in fuel, but... h ttp://www. noria.com/ learning_c enter/cate gory_artic le.asp?art icleid=496 How Do EP Gear Oils Protect Against Wear? EP gear oils contain additives that prevent metal surfaces from cold welding under the extreme pressure conditions found in situations where boundary lubrication prevails. At the high local temperatures associated with metal-to-metal contact, an EP additive combines...

It is well documented and repeatable that if you get your blood alcohol content up to about 1:300 you can be plastered to the back of your seat (although you shouldn't get in your car then). Don't go for 1:200 or you might be dead.

I can only add my experience with my own Dodge, a '91  one ton duelly.  Bought it new in Feb '91, odo quit at 186k sometime around 1999/2000 so I'm guessing it has something less that 400k on it now.  Never used much additives as I never saw/felt any improvement.  The thing still runs as new, not much smoke, no oil used between services...I hate to say it...

( ... you'd need to get all your information from a bloke in the pub. , )

( I take it your Pajero was pre current pollution laws for diesels.   , )

[I take it your Pajero was pre current pollution laws for diesels.] We have no pollution laws in New Zealand - EGR's are plugged,and cats cut off.  

I agree that people may be able to hear/detect subtle differences in engine sound.  That said, I don't believe anyone that says they can detect a change in sound or performance by going to a 1:200 ratio mix of oil and diesel vs straight diesel. This is snake-oil effect at its finest hour.

Also, as I understand it, it's a myth that sulfur itself acts as a lubricant. It's a holdover from the original process that was used to remove sulfur when "low sulfur diesel" (500 ppm) was first implemented ... the process accidentally removed other compounds that are the actual lubricants. When the process was corrected, the problem went away. ULSD should not have this problem because the issue is well known now. So, it...

Ultra Low Sulfer Diesel in most western countries is supposed to meet a specification for lubricity, measured by an apparatus called a High Frequency Reciporicating Rig. So prolly the best way to put your mind at ease is to get your diesel from a reputable supplier.  I have some familiarity with the test method (from a project looking at gasoline instead of diesel), and my experience is almost any lubricity improver will...