I filled up yesterday and didn't put any additive in this time. Lo and behold my truck actually sounded better and feels stronger... Any ideas why??

I was running 2-stroke before, ~1:200. I might have put too much in before, but I was experiencing a light rattle from the injectors at light throttle and when cold, and felt slightly down on low-end power. I did a 366 mile trip (empty) and averaged 22.2mpg though according to the digital readout, so that seemed fine.

But now that I've gone back to straight fuel, it sounds and feels better. I think my fuel economy around town might also be increasing... Does too much 2-stroke oil hinder performance?

 

I think it depends a lot on outside temperatures,and factors like humidity and surrounding air pressure.
Racers take that notes even when they go on a dyno to have comparable data.
I wouldn't think about it, before you havn't cross checked it.
Remember your ECM can adapt and vary values.

 

I wonder if your stations have switched from winter blend to summer fuel. That could make a big difference, especially if mixing 2 stroke oil. The winter blend is a dryer fuel.

About the oil additives -- I remain unconvinced that adding 2-stroke oil is actually good for a diesel. If it actually burns, it could be okay, but my experience running 2 stroke engines tells me that adding extra oil to the mix just leans it out, causing more heat and less power, and (in a 2-stroke engine) eventually scuffing the piston due to the excess heat produced from the lean burn situation.

I'm not sure how that translates to a diesel, which doesn't really lean burn in the same sense as a 2-stroke engine, but I'd think that if any additive is needed, it would just be the missing sulfur that actually lubricates stuff in the fuel system.

In other cases where guys have been adding stuff to their fuel, the effects of the addition soon go away. Sometimes this is due to the fact that the additives clean the system for max efficiency, and once clean there are no more gains to be had.

I'm sure some others will chime in...

 

switching to Diesel no.2- Thats a good reason!

 

big diff tween winter blend and *2

I bet thats what it is bro

 

Yeah, it could be! I'm thinking now that that's all it is. And if so, man I love summer fuel hahaha.

I can't believe how much just changing fuel and additives makes a difference on these diesels. It's like night and day.

Thanks for your suggestions guys!

 

I have to check my fuel, too!
What would be the effect if you could get 60cetane Shell V-Power Diesel

By the way they have brought a new Diesel fuel here on the market, called Shell fuel saver
The claim: save a quarter gallon on 12.5 gallons of Diesel.
Isn't that a joke? Sounds like 2 stroke oil in the Diesel too.

 

I noticed the summer fuel blend last fill up myself.

 

Yeah I emailed the fuel station and it seems that's all it is. Still, I'm surprised at how huge of a difference it made this time. My truck's injectors were rattling at light throttle, it felt down on low-end torque and power all through the rev band. It also didn't feel as smooth. Now it runs smooth once it's warmed up and has gobs of power again... That winter blend is crazy.

 

But the truck starts and runs...

I've seen the diesel fuel jelly that happens when unblended fuel gets exposed to -20 temps. Not pretty, and it will cost you a day with your truck parked in the shop, plus a complete filter change -- IF -- you can even get it running... We ran fuel heaters on our big trucks just to keep this from happening, even with blended fuels.