Originally Posted by Mekanic
The best way to keep the air and water (that is in the air) out of you tank [to stop algae] is to keep the tank filled to the neck. ...
While I agree with that, nothing is perfect. LOL
There is no guarantee that bad fuel can't introduce algae, water, sludge and other undesirable elements into our coach's fuel system. The best we can do is pay attention to where we get our fuel as best we can and follow good practices such as keeping the fuel topped of during extended stays. Besides, it is no practicable to keep the tank topped off to the neck. I certainly don't stop every night when traveling just to do that.
Take for example B20. Cummins says that introducing B20 into your fuel can cause it to clean out stuff and send it to your fuel filter. Therefore the user is suppose to cut the fuel filter change interval in half for the next 2 replacements. That is probably more easily quantified if a user has a specific supplier and will get B20 all the time afterwards.
The problem is that when (I'm not sure "IF" is appropriate yet) B20 starts becoming the most prevalent fuel available that we will need to be prepared for the potential impact. Remember that one of the biggest concerns with B20 is it's cleaning action and how it can potential remove bad stuff in your fuel tank that other blends leave behind.
Consider this. You go to your favorite fuel place and they now serve B20. You know this, have studied it and are prepared for the extra fuel filter cycle. As long as you always get good fuel including B20 you should be able to follow the extra fuel filter replacement cycle and be done with it. The reason is (in a perfect world) is that if all the fuel you get is clean, the initial affect of B20 is on YOUR fuel lines and tank as the B20 is cleaning out YOUR fuel system. Once you get that done, back to normal filter changes. The problem is that as dealers add B20 to there fuel storage systems they are going through the same process. Yes...they should be filtering out the slug that B20 is pre-ported to be cleaning out but they will also probably have similar issues until B20 has done its "thing" and cleaned out most of THEIR fuel impurities.
I'm not cheer leading for B20. I'm just trying to make sure I understand its impact. If that means I will consider a more regimented fuel additive plan, then so be it. I'm certainly not going to beat anyone over the head with yes or no to any additives.
Don, Sandee & GSD Zeus. Gardian Wings earned are GSDs Gunny (7/11/15) & Thor (5/5/15)
2006 DSDP 4320, Spartan MM IFS, 2013 CR-V, Blue Ox Avail, SMI AF1, Samsung 197R Refer.