Pittsburgh Power Max Fuel

Fuel mileage went up 3/10 mpg
Def milage went up from 215mpg to 240mpg
My 2015 ISX 15 runs noticeably quiter
Passive (parked) regen have gone down
I got my truck with 404k on it. Had the filter ever been backed.. I don't know but I had it baked at 847k because I was having a nox replaced and I'd never had it done.
And yes I track my fuel mileage to the point I even know how much my bunk heater uses

 

How many gallons did you go through before you noticed any improvements?

 

changes started on the 3rd full up (3 days) the numbers I post were what is was after 6 days.

I was running a dedicated. Same run, same weight, same road, same fuel stop, same idle time, by the 3rd fill up I could see the changes

 

How would it increase combustion temperature while simultaneously reducing EGT, unless it allowed more heat to escape through the pistons and liners?

 

Just want to preface this by making sure we are clear on the physics. Temperature is a measure of intensity, heat is a measure of quantity. A smaller object can have the same heat as a larger object, it just has to be at a higher temperature.


It's all about the timing of the combustion event. If a catalyst (or engine timing, for that matter,) gets the combustion done sooner, leading to higher in cylinder temps(at an equivalent fueling level) & more of the heat (percentage wise) is used for work. It also means the combustion is compete for a longer period before the exhaust valve opens, lowering EGT.

Remember we're talking about the same power level in the engine with and without treatment, but the treated engine is using less fuel. So even though it's a quicker, hotter burn, the total amount of heat produced is less than untreated engine. Because they're producing the same power, it's taking the same amount of heat to produce that power. The extra heat of the inefficient burn gets dumped out the exhaust, thus the higher EGT.

Tl;dr: The higher combustion temps don't necessarily mean more heat.

 

Sounds like more heat is transferred out of the chamber via the piston and liner due to longer dwell time of the combusted A/F mixture in the chamber.

 

There could be some increased heat flow that way, but lower overall heat generation from a lower fuel burn would be the biggest factor.

It's entirely possible that the increased expansive cooling after a shorter, hotter burn would result in lower overall heat transfer than a slightly cooler but longer burn.

Edit: the increased heat flow into the piston/liner in the early part of the stroke could be balanced by lower heat transfer rates later in the stroke.

 

I've been running the catalyst in my B model for 6 months now. Minor mileage increase of 4 tenths which more than pays for the product. My engine and APU run smoother. Less black smoke out the exhaust, oil stays cleaner longer, less soot in my oil samples.
I will continue to run it as I'm seeing the benefits of it.

 

Those are additives, not catalysts. There's a difference. Swift doesn't care because they get rid of their trucks before the emission system goes bad. This stuff is 100% about keeping the emission system clean and functioning properly

 

Reduced Regens, reduced Def consumption, quieter running, smoother idle, no Def running down my stacks, less soot in engine. It works