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Join Date: Dec 2008
Location: Spokane WA. area
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Sounds like your pretty well set already.
Just watch the weather forecast for the route or region your headed for.
I have found that PS winter formula or Stanadyne or Howes or any of the popular anti gel's work ok for untreated no.2 diesel fuel at max or double doses and are good between 5-25F depending on the fuel. The fuel must be treated before freezing temps are encountered or the antigel will not be effective.
Diesel fuels react differently to additives, it all depends on where the fuel originated from.
If you have winterized-treated diesel fuel available at the pump in your destination location, then the additives will likely have little effect, but it all depends on the station.
In other words, you don't know for sure what type of winterization range the fuel is treated for unless it's posted at the pump, which is non existant in most parts of the country including mine.
So yes, keep treating the fuel to be safe, it only takes one time of being gelled up and stuck on the side of the road to make a believer of treating the fuel. (carry and extra set of Motorcraft-Racor fuel filters with you at all times)
The very best anti gel I have ever come across is FPPF total power or FPPF polar power, this stuff is very strong and is basically mineral turpentine, but is effective, and I only use it when I know a cold snap is coming and we are going to be well below zero at nights and maybe 5-10F during the day. We have treated fuel at the pump which is generally good for 0F + or - 5 degrees.
In general, fuel lubricity and cetane levels are the most important factors to maintain, along with regular filter changes every 15k miles.
Harry
Jan 03' built 6.0/F250cc4wd trqsft/SCT-tuned by KEM-Performance/Garrett Powermax vg-turbo/blue spring mod/gauges=egt+boost+fuel+SG2/exhaust/airaid intake/DR 4.5 lift/dual bilsteins/315's/greasable ball joints/powerstop/smittybuilt/kc lights/high idle mod/roll-n-lock/Mobil Delvac1 ESP 5W40 with (Archoil AR9100 in the oil) and (AR6200 in the fuel)
Last edited by harry6.0; 02-25-2015 at 06:17 AM.
Reason: spelling