I haven't followed  all of these comments on gasline  antifreeze, but I can
add that a few years back, we had two diesel jettas  for 5 years, and
november, because of great changes in weather and temperature,   was the
worst month for diesel cars being  "stuck"  on the side of highways...
Ultramar that has a refinery in the quebec city region,  once got caught
with cold weather or change of weather... they put  more or less paraffin
and other chemicals (???)  in their fuel and eventhough all the other
companies go and fill at this refinery,  their additives are  not the same..
we knew that when we saw a car sitting on the side,  it was a diesel ???
then, if you bought a bottle of antifreeze it had to be written for diesel
only ...gas and diesel was accepted but...I lived two years in Chicago, and
the changes there were worth the Guinness records sometimes!  bottles were
bought by the dozens...
one thing more:  always full your tank at a station when they sell a lot of
fuel... I discovered a gas station  around my place,  where they full more
than 15 to 20 school busses every day... that is the place to go... we are
talking about our own tanks, but think about what happens in the refinery
tank, the truck and the station tanks ??? in a day that the temperature
varies of 30 degrees or more... water gets in these more... so, if you can
do it,  keep your tank  as full as possible.    Also I know that this will
lift a lot of protest, but I used  to add  one  liter of supreme gas in the
55 liters of fuel when it became very cold that is minus 20, 25' F... and
best of all I had a very good check of my glow plugs in november... for good
starts...
happy sunday to all and good super...B...

pierre a. lachance
lac beauport, quebec
canada
weekender 85 zephyr
n. beetle 00 green apple