Yes, it does but lower lubricity is the direct result of lower sulphur. To get to 15ppm of sulpur lubricity was lowered so much that suppliers are required to add, wait, additives to raise the lubricity to a minimum standard. For some high pressure common rail diesels, for vehicle and boat, that minimum standard is insufficent to provide the lubricity to protect high cost injectors. As for "old-style" engines (Lehman, Perkins), the necessity of lubricity additives is debatable. I choose to waste my money using an additive for my Lehmans.ULSD is find to use, with or without additives. The low sulphur content of ULSD has more to do with emissions than lubricity.
I stopped using a fuel additive and my oil analysis actually inmproved on my 120 Lehman and I put 450 to 600 hrs per year.
Then you need to talk to owners of early model Chevy Duramax diesels.There has been a lot of doom and gloom about the lower lubricity of low sulfur fuel, but it's been out for 12 years now and I haven't heard of any rash of injector or injector pump failures. I may very well not know the whole story, but there had been so much awareness at the time that lubricity standards were implemented which fuel must now meet.
...talk to owners of early model Chevy Duramax diesels.
With a fleet, maintenance maybe changing injectors and other parts you're not aware of. The 7.3 Ford diesel has known stiction problems limiting the life of injectors and fuel system parts because of buildups. I know, I have one. With the additive, my injectors last twice the Ford normal life cycle. And the additive makes the crappy fuel burn better. When not towing and traveling under 60, I get 25mpg. I bet your trucks didn't get that.I had ZERO issues with my 2001 Ford 7.3 and it never saw an additive in 16 years. Neither did the fleet of Ford rucks the company I worked for.
With a fleet, maintenance maybe changing injectors and other parts you're not aware of. The 7.3 Ford diesel has known stiction problems limiting the life of injectors and fuel system parts because of buildups. I know, I have one. With the additive, my injectors last twice the Ford normal life cycle. And the additive makes the crappy fuel burn better. When not towing and traveling under 60, I get 25mpg. I bet your trucks didn't get that.
Maybe Bosch should design a pump where any pump chamber wear products would go into the return and NOT into the pump chamber, thus injectors. That involves a few fitting changes and NOTHING else. Oh No, the American engineers can't tell the German engineers anything, they are smarter than we are.
Some of those pump designs get the dumbass award.
Back from a trip to Europe,there are probably a majority of diesel vehicles there. We had a Skoda with gasoline turbo (VW)engine, similar fuel burn to diesel Skoda Octavia and Ford Focus previously hired, about 4.2L/100km per fuel computer...What irks me, the diesel car and truck makers keep- screwing the public with their bad choices. They totally ruined the diesel experience to the general public with the GM 350 diesel, then there was diesel-gate with Volkswagen.
Now I read the EU is banning diesel engines and wont allow any diesel sales for vehicles in a few years as they hate the diesel exhaust pollution, which they claim gives people cancer. I am sure US cities wont be too far behind efforts to ban diesel engines. Gasoline will continue to rule....
"so yes the US needs to mandate bio diesel as Europe did for the improved lubricity. Some states already require biodiesel to be mixed into diesel.
The problem is there are probably 1000 times as many diesel cars and trucks as boats.
Even with DEF the air police mandated exhaust systems fail rapidly with bio gunk over 5% or so.
Our M-B V6 diesel goes out of warranty if over 5% bio is used and steps are not taken to clear the system.
"so yes the US needs to mandate bio diesel as Europe did for the improved lubricity. Some states already require biodiesel to be mixed into diesel.
The problem is there are probably 1000 times as many diesel cars and trucks as boats.
Even with DEF the air police mandated exhaust systems fail rapidly with bio gunk over 5% or so.
Our M-B V6 diesel goes out of warranty if over 5% bio is used and steps are not taken to clear the system.