is all diesel 500ppm? or is there another kind?

 

500 ppm Sulfur is referred to as "Low Sulfur Diesel" and can be used in all 2007 and older vehicles. 15 ppm Sulfur is referred to as "Ultra-Low Sulfur Diesel" (ULSD) and is required for use in all 2008 and later on-road diesels.

500 ppm is getting hard to find; everyone in my neck of the woods is carrying only ULSD. With ULSD, you should add an injector/fuel pump lubricant.... 2% to 5% bio in warm climates, one of the commercial additives where it's too cold for bio.

 

i have been using lucas fuel additive every third fill up. do i need to use something else? 02 F250 7.3L 140K

 

I don't have a dog in this fight, but I use Opti-Lube XPD. There was a posting of some test results some time back that showed 2% to 5% bio to be the best injector & pump lubricant. Next best was Opti-Lube..... But I had already gotten some inside information from a friend and fellow SAE member who works for an engine mfr. that they were testing different additives, and this was the best so far.

It also has a Cetane boost, but not very much, and it depresses the pour point, but not that well. I use it along with Power Service white in the winter and grey in the summer.