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Ok, so here lately ive been getting the P0308 code when I leave my truck idling for awhile. I know that injector #8 is requiring more fuel than the others, and I think the pin in the injector isnt sliding in and out correctly. I figured adding some kind of lubricant would help the injector. I use the Power Service Diesel Kleen (Gray Bottle) every other day, and everytime I fill up. So whats a good lubricate to help me for awhile?
 

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Got any place nearby that sells bio diesel? In reading the lubricity test results that were posted in another thread it shows that bio is really really impressive as far as wear goes.
Other that that maybe doubling the dose of grey Power Service might work.
 

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I use OptiLube XDP......seems like its pretty good stuff....smooths out my idle quite a bit and it seems it increases power but could be the seat dyno I sit on too.
 

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I have used everything from opti to oil and always had a surge a few weeks ago I started using b20 and wow the surge is gone no matter how long I idle and the engine is smooooth. Give it a try
 
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