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I've used "Pri-D" for over a decade now and have had no problems. I started with totally clean tanks though. Maybe some residue from the past interacts with the "Pri-D" . Either way though I would continue to use the "Pri-D" as it is the best on the market at this time.

All diesel engines say to use ULSD as that is the law. Doesn't mean it's the best thing to do though. Your "regen" system will handle any additives you add without "gumming" up the system.

Yes they have added some additives to the fuel, but not near enough for our vehicles. The modern injection pumps are designed to operate with the low sulfur fuels, so not much additives is needed for them. Our old injection pumps and injectors are a totally different story. On the new stuff I...

Yes. I was just getting ready to comment when I read your last post. My neighbor is a fuel delivery guy. He told me all the diesel is the same now. Just dyed for tax purposes. Sorry to say, but Ultra Low Sulfur Diesel is here to stay. We all need to add additives to our diesel vehicles and...

Where are you buying "Jet-A" fuel from ?

Yes you are lucky. Thanks for rubbing it in !!! I cannot remember the last time I saw 50 cetane fuel up here. Ever since the Feds mandated that "all" diesel fuel sold must meet the Ultra Low Sulphur standard, that dried up my off-road diesel supply.

Your right about winter fuel (diesel #1) having less cetane levels as summer fuel (diesel #2) . It also does less lubricating as they remove the "paraffin" from the fuel to prevent gelling at cold temperatures. So not only does "winter" fuel have less cetane levels, it also has less lubricating...

Well, no. First you need to understand the "cetane" level needed to operate diesel engines efficiently. Most agree that a cetane rating of 45 to 55 is the perfect range for most all diesel engines. In todays "ultra low sulpher" age the average cetane level is 40 to 45. That lower level is due to...

Used that trick for years now. If you know your going to rebuild an engine, then you throw in about 2qts (20% of the engine oil) of Dexron II or Dexron III in it. Run the engine for a few days , then drain. Really helps in the clean-up. We also used to use "Rislone" engine cleaner, though I...

If after you clean out the water separator and it still runs bad then try and bypass the F1 and F2 and then the A9 float switch like Guy mentioned.

Replace those filters !

I love "BioBore" ! Out here in the Pacific Northwest algae is a constant problem.

Good advice KennyO. Micro leaks can be a pain in the A$$ to find. Most likely though it's his filters causing the problem here. Due to the crud sealing up the filter media and then releasing due to pressure build-up, then sealing up again. Rinse and repeat. I bet once he replaces the filters it...