Diesel

[B27]

....

I will keep buying FAME free diesel to avoid potential problems.

You don't avoid the potential for problems by buying FAME-free diesel.
Problems were just as common before FAME was put in diesel.

If anything, I'd say problems were more common 25 years ago, before bio diesel when virtually all yachts used red because it was half the price of white.

 

[jdc]

The impact of water being absorbed is that the conditions then exist for the growth of bug.

I'm not convinced that this is true, in fact I think it's innumerate.

Diesel 'bug' is comprised of bacteria and yeasts. How many atoms in a bacterium? About 10^11, or 100,000,000,000. These have to live in free water big enough to surround them in order to multiply. But when water is absorbed by FAME, it is the polar nature of a single H₂O molecule (ie 3 atoms) surrounded on all sides by the FAME molecules. That's what a solution means! So to blame absorption of water by FAME for bug propagation is a factor of a mere 30,000,000,000 out.