Stanadyne Fuel Treatment

[SyN]

Did a mild mod this afternoon: I hated trying to fuel & add fuel additives to the tank.
I removed the back spring on the main flapper! I didn’t know if it was possible or not but I did it and rehung the flapper due to you really can’t just pull it out.

Now fueling the tank & adding a quality fuel additive is very easy & mess free.

Edit: This morning I received a Free 16oz bottle of Hot Shots Secret -EDT- from a vendor.
I will add 4oz with the 8oz FPPF Lubricity.

 

[fest3er]

Blue Ridge Diesel here in town recommends Stanadyne for all their diesel customers. FWIW, I use 8 oz. Stanadyne treatment (mostly for anti-gel and partly for lubricity) plus 8 oz. of 2-ethylhexyl nitrate (to boost cetane) per tank of fuel. The increase in MPG more than pays for the cetane boost.

 

[ofelas]

Up here in Canada, a minimum of 2% biodiesel is mandatory (upto 5% in some provinces).

Great for lubricity & injector cleanliness.

Except in winter, when they change to a non bio content blended diesel.

In winter months, I have had good luck with Amsoil's Cold Flow (now available in an All-In-One version), as well as Schaeffer's All Season SoyShield.

 

[12LaramieHO]

Ive been trying this additive with acceptable results waiting for cold weather anti-gel trials. Was able to buy it in Montana if I wanted too drive to attain it (I DID NOT) Price wise its not all that much higher less than a buck if IRC at my Favorite New Hardware store in Indiana RUAL KING AWSOME STORE!!!!

Here in Indiana we can buy ULSD with or without BIO additive (I CHOOSE NOT TO USE BIO)
also can buy various Gas Leaded 90 oct Recreation Gas, even have 110 oct Leaded gas (for use in stationary equipment) when I asked a guy filling Gas cans what that meant he shrugged his shoulders and said that his Hemi Cuda doesn't stay stationary long enough to find out :-laf

no auto inspections this a dream come true for enthusiastic owners.

BIG
I had a 2000 PSD that I ran Stanadyne in from day one, new, through almost 300K miles and 12 years. It seemed to help the mileage and run a little cleaner on the exhaust. I was living at 4000ft at the time where it was routinely below freezing and never had an issue on a startup even after the truck sat in freezing weather for over a week at a time through a couple of snow storms and that was without the block heater. Never had to use it.
2012 came along and I bought the 2012 Laramie CTD, been running Stanadyne in it since day one, no problems.
So I am a fan.
Side note, Cummins/Dodge within about the last year or so just approved Power Service Diesel Kleen as an approved additive. I have also used it in the past in the PSD and the Cummins with positive results.
No complaints on either. Cetane booster/water dissipater helps on cold starts and if you have a little moisture in the fuel. You can also get the Winter versions that real help in extreme cold/wet climates.
~Chad

 

[GAmes]

BIG
I had a 2000 PSD that I ran Stanadyne in from day one, new, through almost 300K miles and 12 years. It seemed to help the mileage and run a little cleaner on the exhaust.

I'm curious how you determined it helped mileage and ran cleaner if you used it all the time. How did you do a comparison? I never use any additives but one time drove from central TX to SK and back using Stanadyne to see if there would be any improvement in mileage. It was after another TDR member claimed huge mpg gains, and involved a donation to our favorite charity. There was no improvement at all.

 

[Tractorat]

Ive been using stanadyne and now the stuff cat makes ever since they went to the new diesel. No improvement in mileage. However, I do notice that with the additive the engine does start a little smoother and runs just a little smoother and quieter. No financial gain, but it feels better. Ill never know if it helps with the long term life of the engine. But my mech still recommends it and he is very highly regarded in this area.

 

[GAmes]

I've read the quieter claims by those who use 2SO. So one day I used an audio meter to gauge the noise levels inside the cab, next to the fender hood down and in front of the engine hood up. I then added an ounce per gallon, drove around a bit to get it mixed thoroughly and did the same noise checks parked inn the same place. Absolutely no difference in decibel readings. I didn't notice a bit of difference with Stanadyne either, but didn't have a audio meter at the time.

 

[NIsaacs]

So one day I used an audio meter to gauge the noise levels inside the cab,

 

[ofelas]

We can rely on GAmes to seperate the wheat from the chaff.

 

[Dl5treez]

Diesel fuel sold in North America has a very wide range of “spec” and any sort of analysis of anything is very difficult to perform, if not impossible, due to variance in loads from one tank to another.

 

[BIGNASTY]

Diesel fuel sold in North America has a very wide range of “spec” and any sort of analysis of anything is very difficult to perform, if not impossible, due to variance in loads from one tank to another.

Where are you getting the info that Diesel in NYC is any different than in Calif?

 

[Tractorat]

I've read the quieter claims by those who use 2SO. So one day I used an audio meter to gauge the noise levels inside the cab, next to the fender hood down and in front of the engine hood up.

No credentials here. But it is my understanding that stanadyne is only relevant for the vp44 trucks is it not ? I see your truck is a 97. But I dont know when the vp44 became the ip for these trucks. Does your truck have a vp44 ?

 

[DavidC]

98.5 started the VP with the 24 valve

 

[NIsaacs]

But it is my understanding that stanadyne is only relevant for the vp44 trucks is it not

Isn't it advertised for all diesels?

 

[Wayne M.]

I have not religiously used any treatments in my fuel. I’ve always picked up Stanadyne whenever I saw it, I’ve used other brands too. Lately I see the whole Stanadyne line at Tractor Supply, so I’ve been keeping an extra bottle in stock. It was once very hard to find. I don’t notice any less odor as when I used it long ago.
I’m more concerned about the % of bio and the stocks used in the bio blends they’re jamming down our necks (filler neck that is). I recently dealt with a truck that had been out of service for months at the job, and it seems that the fuel went bad. It looked like a emulsification of water and oil. Milky junk. The Davco water seperator shut the truck down. I don’t think any additive can protect against bad fuel such as that.

 

[ofelas]

It's nigh impossible for any additive to beat the cleaning/lubrication effects of even 2%-5% bio content #2.
The only valid reason for using an additive is for its winter anti gel properties, on the rare occasion that the local area station messes up their winterized mix.

 

[Tractorat]

Isn't it advertised for all diesels?

Once again I have no credentials here. But Ive been led to believe by the tdr and a couple of well respected diesel mechanics it is to protect the vp44. I guess the "ppump" doesnt need the extra lubrication (?)

 

[Wayne M.]

Once again I have no credentials here. But Ive been led to believe by the tdr and a couple of well respected diesel mechanics it is to protect the vp44. I guess the "ppump" doesnt need the extra lubrication (?)

The concern with that pump was it’s design, and lack of engine oil supplied lubrication. It relied entirely on fuel to cool and lube the unit. Bad things happened once the lift pump stopped performing, which ironically happened often in this arrangement. The fuel treatment was a precaution, as it is now in this thread.

 

[Tractorat]

The fuel treatment was a precaution, as it is now in this thread.

That was my understanding.

 

[GAmes]

Keep in mind, there is nothing except speculation and anecdotes that fuel additives other than what is already in pump #2 will extend the life of a VP44. On the other hand, evidence abounds that lift pump failures with the resulting lack of cooling, is the bane of the VP44.