It is getting cold around here now and I probably should start using a fuel additive.


I have seen the name Primrose FlowMaster 409 around here alot and plan on buying a case soon.


One question though?


What makes this additive better than something I can pick up at the local Flying-J truck stop?


Thanks


Paul

Primrose 409 is unique in several ways: it is rather "industrial strength" additive in that only 2 ounces per tankful provides.
1. 30 degree reduction in pour point.
2. Virtual elimination of free water: no free water to freeze, no frozen fuel filter, etc.
3. Prevention of rust via corrosion inhibitor
4. 5+ Cetane Boost
5. Lubricity enhancement for pump/injector operation
6. Detergency to keep injector tips clean
7. Prevention of microbial growth by property #1. (NOT, however, bacteriacidal: 409 is bacteriastat. Prevents bacteria growth by preventing a water/fuel interface (home) but does not kill bacteria/algae. Not a poison, does not contain bacteriacide/poison.

All in 2 to 3 ounces per tankful....
George Morrison

I bought a six pack of the 409 from George. Just how are you guys breaking it down to 2-3 oz? Will putting too much in screw up the fuel? I usually keep the additives in my garage and add it just as I go to the station.

RT,


The best way I have come up with is to buy a bottle of 1. 2 stroke engine oil or 2. a bottle of fuel stabilizer - both of which have a smaller bottle at the neck that allows you to measure out exact oz. amounts.


Bob

RT,


The best way I have come up with is to buy a bottle of 1. 2 stroke engine oil or 2. a bottle of fuel stabilizer - *both of which have a smaller bottle at the neck that allows you to measure out exact oz. amounts.


Bob

I stopped at The Container Store the other day and picked
up 4 2oz bottles (square, with leakproof caps). I marked
them at every 1/2 oz with a permanent marker. For a 26
gal tank, that would call for 2.8oz of Primrose 409, but
usually when I fill up I still have 1/4 tank left, so the
filled 2oz bottles should be perfect for 3/4 tank of
fuel. I put the four square bottles in an old 3"
plastic cube (i.e. the ones you buy at the office supply
store for dispensing square pieces of paper), and they
fit perfectly! I put the cube behind the back seats on
the drivers side-- near the fuel cap.

In warmer weather I will use the Primrose 405, which is
less concentrated, calling for 1.6oz for a full tank,
which would be 1.2oz for 3/4 tank-- so I'll just fill
the bottles a little more than 1oz in the summer (half
full).

BTW: I did send email to Primrose, asking if there were
any problems with using the plastic containers (i.e.
they are semitransparent, so issues with light), and they
indicated that there should be no problems...

Paul.

And no, Primrose 409 or 405 overtreating will not cause problems. Only continued, increased advantages, just to a lesser degree of cost advantage..
Some have found that double or triple dose treating is worth the performance increase... To each his/her own...
George Morrison