Quote:
Designed for diesel, biodiesel, and approved for 2007 and newer engines.
It has taken three years but Primrose has done it, created a bio-disel specific winter fuel additve! Primrose 4033 works with Bio to increase cetane, eliminate free water,prevent microbials, provide biofuel stabilization, significantly extend fuel filter life, provide rust protection, lubricity enhancement for our pumps, injectors, detergency to keep our injectors clean and working optimally, AND lowers the biodiesel pour point 30 degrees. You will *feel* the difference with 4033. Works wonderfully with straight #2 diesel also.
I'll preface with the fact I have not used it. But according to the lubricity study I read on dieselstop, Primrose products do NOT help with lubricity, so write that off. In addition, any amount of biodiesel over 2% will not need ANY additional lubricity. Biodiesel is the best possible lubricity additive. Biodiesel is also an excellent cetane enhancement, so you will not need this product if you use biodiesel. Biodiesel also does not need any cleaners as it is an excellent solvent.
If this is indeed effective with lowering the pour point of biodiesel, that would be useful, however that would require some test data to convince me; these claims are made by many who do not deliver. For winterizing biodiesel the best solution is kerosene, or diesel with a diesel antigel. I've run B40 in diesel with arctic express (ineffective in B100) that started and ran fine at -30F.