GazCro
Well-known member
All diesel red/white to en590 has bio content and has been the standard fuel for a few years most places now. Cheaper forecourt fuels may have more bio in or poorer quality bio in who knows. En590 is just a minimum standard anyway so could cover a fairly wide additive range.
A lot of diesel bug problems are not strictly the fault of the fuel you've just put in but can be its reaction to the existing fuel already in the tank (or sh*t already in the tank). My bulk supplier advised running tanks down and cleaning them out when they moved to en590 spec red several years back to rule out potential issues with older fuel mixing. I've never had bulk fuel without extra additive in (still get it in white) and "touch wood" never had any fuel issues yet.
A lot of diesel bug problems are not strictly the fault of the fuel you've just put in but can be its reaction to the existing fuel already in the tank (or sh*t already in the tank). My bulk supplier advised running tanks down and cleaning them out when they moved to en590 spec red several years back to rule out potential issues with older fuel mixing. I've never had bulk fuel without extra additive in (still get it in white) and "touch wood" never had any fuel issues yet.