My white bottle of Power Service mix ratio is 80 ounces to 250 gallons. So the math works out to a smidge under 12 ounces to my 37 gallon tank. If I add to every tank and I fill up at just under 1/4 on the gauge and I measure precisely, wouldn’t the mix ratio keep climbing over the winter? I passed Calc II in college but the measuring cup or the fuel gauge, for that matter, isn’t that precise. Do you guys back down the additive amount as winter progresses or am I worried over nothing?

 

I never gave it a second thought and if the ration increased as the fill ups happened, then so be it.

Never had an issue once.

 

I’m sure it doesn’t hurt to have a little more in. Who knows if it actually helps adding it in the first place.

 

I've always wondered the same thing. They claim lubricity and cetane additives are good but I honestly think it doesn't.

Just my opinion.

 

With EGR systems, it helps to have as complete of a combustion event as possible. I haven't seen a study that conclusively showed EGR valves and coolers would plug less with fuel additives used or not.

Personally, I think that a good additive helps the combustion and I think that at least some small cetane improvements are part of it. How much it helps is another thing. I am sure that this topic of discussion could go on for quite a while. I doubt that the consumer would be supplied the best fuel possible for their engine from bulk fuel stations. Just my individual perspective.

I am 100% convinced that our fuel systems remove water more efficiently when using a water "demulsifying" fuel additive. That is not insignificant.

 

I’m with ya……though admittedly I’ve used hot shot’s secret religiously and an expensive “boutique” oil for years. Maybe it’s nothing more than the placebo affect……and it’s the “work’s for me” mentality. It’s certainly not fact based. I can’t find any “conclusive” facts to support the use of these products, but it feels good.

 

Might be something in here for ya Chuck:

https://www.jatonkam35s.com/DeuceTec...itive_test.pdf

 

Well first off, you never put 37 gallons in right? So instead of doing the math on 37 gallons, use how many you normally add when you fill up at 1/4 tank. Get close, it doesn't have to be perfect. Mainly because if you read the labels on winter additives there are usually temp scales where they want you to double or triple the dosing to achieve lower gelling temps anyways.

As far as the ratio creeping up, in practical terms is doesn't matter until you're more than quadruple dosing with the additive, it's only wasted money and doesn't cause any issues. But a solution is run a tank without additive on occasion - that resets the ratio to nil and you start climbing the ladder again.

FWIW the only time my fuel has ever gelled was using the white bottle of Power Service. Optilube XPD or Winter has never let me down. When running XPD I can tell a difference in how the truck runs with a single dose versus a triple, so that's why I use winter plus a single XPD dose when it gets cold-cold.