The "Hot shot" product you are asking about have proven itself in my field. It does provide relief from Sticsion, but temporarily. Once the damage is done.... the damage is done. If it was a permanent fix, International would be buying it like crazy. It would have saved them tons of money in warranty claims. Alliance Injectors are good products, much better than our International brand rebuilds. $40 cheaper per injector at my coast as well.
DESCRIPTION Of stiction and related issues:
The Injector Performance Tester (IPT) tests the diesel injector hydraulic oil control valves (spool) while the engine is running at specific temperature and RPM conditions. After completing the test, the IPT displays the results for each injector as a PASS or FAIL .
The IPT is only designed to measure Injector hydraulic spool delay (Stiction) and compared the delay against the PASS and FAIL specifications on Engines with the G2 injector - (2004 and newer engine model year) VT 365 and VT 275 .
The IPT will not diagnose power cylinder contribution, compression, or Injector fuel related issues.
UPDATE 10/03/2011
1.Make sure to check for and repair any fuel-related or injector open or short Diagnostic Trouble Codes (DTCs). The IPT Tool will not allow testing if these DTCs are present. List all injector DTCs on the claim to explain why the injectors were replaced.
2.Verify that the IDM and ECM are using the latest calibration. The IPT Tool will not permit testing if the calibration is not current.
3.A complaint of excessive white smoke or engine miss/skip upon acceleration and no DTCs present, indicate use the IPT Tool before any further diagnostic tests are performed.
4.VT365 calibrations PAN2PWR1 and later calibrations were implemented to improve cooling system fault management and these calibrations also have fuel injection timing changes to improve combustion robustness and reduce visible white exhaust smoke. When DTCs 571-578 are set that means the IDM is unable to adjust fuel quantity to compensate for a rough idle. The IPT Tool should be run even with these 571-578 DTCs present.
5.If the IPT tool does not identify an injector(s) that need to be replaced, then DTC’s 571-578 could be a power cylinder, valve train, or injector concern that should be used to correct the concern. Document the injector codes (571-578) and submit them with the warranty claim. Refer to TSI-09-12-12R for more information.
6.The IPT Tool should be used for Warranty and Service Contract warranty repairs when symptoms dictate.
7.A Warranty Authorization Code (WAC) which is generated by the IPT Tool is required for all Warranty and Service Contract warranty claims where the IPT Tool is used to identify defective injectors.
8.If there are technical problems with the IPT Tool itself, contact tech support for assistance. Make sure to get the most current version of the IPT software loaded onto the dealer computer.
Symptoms related to Injector Stiction
•Hard Start Cold, No Start Cold
•Sluggish performance cold
•Multiple cylinder miss cold
•Runs and starts better warm
•Excessive white / black smoke on acceleration
•Miss at high engine RPM
•Stumbles and misses on acceleration
Possible Injector Stiction Causes
•Extended oil change intervals : This is the leading cause of injector stiction. Extending the oil change interval only once can cause injector spool damage. High soot (carbon) content in the engine oil will wear the spool and bore.
•Long idle times cold climate: Long periods of engine idling increase the amount of soot in the engine oil and also prevents the engine from getting to the proper engine operating temperatures:
•Unaided cold starting: Glow plug system not working or driver not waiting for the "Wait to Start" light to go out before starting. Not using the block heater during cold weather conditions.
•Wrong oil viscosity for operating temperatures ( Cold climate )
Other poor starting and running conditions not related Injector Stiction
•Slow Cranking: Low batteries, poor connections, bad starter
•Low oil pressure during crank
•Low ICP pressure
•Other electrical issues: No power or ground to ECM or IDM, poor electrical connections to the injectors causing diagnostic codes.
•Poor Fuel Condition / Quality : Cloudy fuel and /or low cetane can cause hard starting and poor performance
Other Injector Failure Causes
•Low Fuel Pressure: Causes plunger scoring and rapid injector failure
•Poor Fuel Quality: Same as above
Here is a Link to a fuel additive study.
http://www.facebook.com/l.php?u=http%3A%2F%2Fwww.dieselplace.com%2Fforum%2Fshowthread.php%3Ft%3D177728&h=dAQGjPhXq