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Fuels & Lubricants Discussion all about Fuels & Lubricants. synthetic oil, conventional oil, brands, change intervals, diesel grades, gelling and such debated items like that. Non TDI related postings will be moved or removed. This forum is NOT for the discussion of biodiesel and other alternative fuels.

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Old July 15th, 2017, 00:41   #1
Drivbiwire
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Join Date: Oct 1998
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Fuel Economy: Who cares, it's a diesel!
Default Asphaltene Issues related to ULSD

Start using Power Service "Diesel Kleen" on every tank... Stock or Aftermarket, your injectors and fuel system will thank you!

https://www.cumminsfiltration.com/si...ne%20Boost.pdf

Must read:
https://www.sbmar.com/Maintenance/PDF/ULSD-Fuel.pdf
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Last edited by Drivbiwire; July 15th, 2017 at 07:09.
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Old July 15th, 2017, 06:56   #2
Jetta_Pilot
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Quote:
Originally Posted by Drivbiwire View Post
Start using Power Service "Diesel Kleen" on every tank... Stock or Aftermarket, your injectors and fuel system will thank you!

https://www.cumminsfiltration.com/si...ne%20Boost.pdf

Get ready for all the NAY Sayers coming out of the woodwork now !!!

I've been using PowerService "Silver" only since 2005. But I do not spend winters in the cold !
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Old July 15th, 2017, 07:08   #3
Drivbiwire
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https://www.sbmar.com/Maintenance/PDF/ULSD-Fuel.pdf
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Old July 15th, 2017, 07:10   #4
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On Heavy duty trucks where the fuel gets hot...it builds up...forms little black balls, reside..but FUEL doesn't seem to get as hot...not as much getting sent back to the tank in a TDI.
I use PS for other reasons.
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Old July 15th, 2017, 07:18   #5
Drivbiwire
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Originally Posted by ZippyNH View Post
On Heavy duty trucks where the fuel gets hot...it builds up...forms little black balls, reside..but FUEL doesn't seem to get as hot...not as much getting sent back to the tank in a TDI.
I use PS for other reasons.
For every unit of fuel burned 200 parts are circulated back to the tank...

The TDI circulates at idle approx 2 liters per minute of fuel, at 5100 rpm, return rates to the tank are approx 8 liters per minute.

Fuel in at the ALH TDI, has very little return rate from the injectors, these are effectively a total loss system in the sense that once the fuel is pushed to the injector nearly all that fuel is delivered to the cylinder. The problem with this is that the fuel is heated and after the 6-8 injection events required to push the fuel from the plunger to the nozzle, it has increased in temperature significantly and is easily exceeding 300-400F. This causes varnishes to form if fuel additives are not being utilized.
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Old July 15th, 2017, 13:27   #6
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I run it in every single tank of fuel. Silver bottle in the summer, white bottle in the winter.

I always figured, even if it was only for placebo effect, I was OK with it.
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Old July 16th, 2017, 13:30   #7
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I just got back in a TDI, my fourth, in May when the opportunity to purchase a new old stock EPA re-release GSW for $8K off at 0% for 72 months (a veritable no-brainer) presented itself.

I decided to experiment on the first several tanks, rotating through Stanadyne Lubricity, Stanadyne Performance, OptiLube XPD, and Power Service summer (silver bottle). The first three are all demulsifiers while PS is more preferable as the only emulsifier and will pass any water safely through the system without collecting. I'm also finding that PS is returning significantly better mpg for me, so the experimenting phase is over and it'll be PS silver until late fall, and then PS white until spring.
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Old July 16th, 2017, 14:53   #8
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Optilube XPD for many years now.....
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Old July 17th, 2017, 00:20   #9
lovemybug
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Been using both white and grey bottle PS for many years. Started using Howe's recently, and it seems my performance has gotten better. No concrete evidence, just seat of the pants feel.

Just out of curiosity, DBW, what's your opinion of Howe's vs. Power Service?
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Old July 17th, 2017, 01:57   #10
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Originally Posted by lovemybug View Post
Just out of curiosity, DBW, what's your opinion of Howe's vs. Power Service?
I've seen him get asked that numerous times in other threads without a response.
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Old July 18th, 2017, 13:54   #11
Drivbiwire
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I prefer the Power Service mostly for water control, but also for detergency and cetane increase.
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