16-08-2013, 08:52 PM
Pretty much all common-rail pump manufacturers insist on an upper limit of B20 without compromising reliability, fairly sure 5% is obligatory in pump diesel now. From what i've researched i understand the main issue is the higher/different acidity over oil-based diesel, means the seals break down quicker. I remember finding some companies selling seal kits made from something that will withstand it better, but can't remember the name of either companies or materials, so um... Haha, well you've got something to google, that's a start right? 