I run on contaminated fule a lot that I get threw work in my 2.25 3 baring Landrover petrol engine. It's fine for me and often at a 25% deasel ish. Wudnot dream of it in a rangey. At worst I have 2hours cleaning to do. Hawking wuld it take to strip Dawn and fully clean a rangy fule system? Moor...