Injectors and Stanadyne???

[CrewCabDiesel]

I have been using Stanadyne Performace on both my 1st gen and my 2001, it was recommended HIGHLY to me by the guys who rebuilt my pump in my 1st gen . I put some in almost every tank full and have a slight milage increase and I would swear that my 24V is a little quieter running under the hood. Here on the lake shore, temps can easily jump up or down 40 degrees in a couple of hours, so I want all the protection and lube I can get to my pump.

Kyle

 

[Mike Ellis]

I have experimented a good bit with a couple of fuel additives and tracked closely to see how they affected mileage and "drivability".



Marvel Mystery Oil is the only one that increased my mileage enough to notice, not quite 1 mpg but heck every bit helps. Compare this to Stanadyne and Power Service which on several tanks actually showed a decrease in mpg. Pump seems to like MMO, truck runs noticeably smoother when MMO is in the tank so that is what I am sticking with. I put it in about every 3rd tank or so. Cheap compared to the other additives.

 

[HC]

If you go to the Stanadyne website, you'll find they make several different formulas. The most commonly used is Stanadyne Performance Formula. However, if lubricity is your primary consideration for choosing to use an additive, then check out Stanadyne Lubricity Formula. It's about half the cost of PF per gallon of treated fuel, and thus competitive with several of the "low cost" treatments that are out there.

 

[C Schomer]

A local Bosch fuel shop sponsored a meet for us last summer. FWIW, they claim that using a good additive every fill will prevent ISB lift and injector pump problems as long as the mods don't exceed pump capacities. They like Stan PF - made by a fuel system mfgr. When I bought my 97, a buddy at Cummins said he's seen some P7100 wear already at 60k miles since the low sulfur fuel. He recommended at least lubricity additive. I've had mpg increase with Stan PF and LE. I treat every tank. I like the LE - it's more concentrated and has a long neck bottle, almost like my beer! Craig

 

[Gary - K7GLD]

"a buddy at Cummins said he's seen some P7100 wear already at 60k miles since the low sulfur fuel. "



Don't let the 12 valve crowd see that - they like to think only the 24 valver's VP-44 pumps can possibly wear or fail...



Personally, I just think the VP-44 is built to tighter tolerances, and is more sensitive and vulnerable to reduced lubricity - making it even more critical to maintain as much lubricity as reasonably possible.

 

[C Schomer]

At least he said it was very slight wear!