15-07-2021, 11:14 AM
B & S filter 690612.jpg (Size: 4.22 KB / Downloads: 278)
Since covid lockdown started I've used Sainsburys because it is card payment at the pump. Recently I've taken a bit more interest in the grades and see Sainsburys offer E5 and E10 and the E5 is £0.32 more per gallon than E10.Our more elderly members may remember Cleveland Discol which was available up to the 1968, this was a blend of petrol and ethanol, at what concentration is not known various sources say from as low as 5% to as high as 20%. This was developed by Harry Ricardo, National Distillers and Shell oil in 1928, so in all probability a lot of Sevens may well have run on it.
Judging from some of the 22FZB carburetors that I've had to deal with where the inlet filter is severely corroded into the the carburetor and had to be cut out I don't think this is a new problem.
I think the problem with ethanol is if you get any water in the fuel tank, this will combine with the ethanol to produce an acidic compound, so drain any water out. This can be easily detected and drained off on gravity fed front tank cars if a glass bowl Brigs and Stratton filter is installed below the tank, see photos.
Faced with my daughters boyfriend filling her VW Beetle up with diesel I had the job of sorting it out and ended up with 4 gallons of almost neat diesel, it went in the Seven to give a 50/50 mix which loved it, a bit smelly when cold but OK when hot.