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Duramax 6600 Discussion Forum for the Duramax 6600 Diesel Engine, including the LB7, LLY, LBZ, LMM & LML engine specific topics.

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Old 05-02-2012, 05:40 PM
chessy56 chessy56 is offline
Join Date: Jan 2006
Location: South Milwaukee, WI
Posts: 203
Red face injector cleaner additives- worth it?

Out of curiosity- are fuel injector additives worth it and if so, which ones are "preferred". My first set of injectors lasted 175K miles and I've got nearly 95K on the replacements. I'm just trying to extend the life and put off an eventual $4K charge for another set installed. Should the injector additive be run double strength at first? Just curious has to what luck people have had with this stuff? Thanks guys.
So. Milwaukee, WI
'01 2500HD, LB7, 440K miles
"Stock" engine. Dual fuel filtration system with Kennedy lift pump, BF Goodrich Commercial T/A Traction tires

'17 2500HD, L5P (Happy Birthday/Merry Christmas to me!!! Not excited about loan and insurance costs though...)

"Socialism is a philosophy of failure, the creed of ignorance and
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Old 05-07-2012, 09:02 AM
More Power's Avatar
More Power More Power is offline
Join Date: Feb 2000
Location: Big Sky Country
Posts: 10,267

The diesel fuel injection industry and GM do not recommend using any of the diesel fuel additives on the market today. GM approves of the use of a couple different brands, but does not recommend them. Numerous fleet fuel economy tests have been conducted through the years to determine the economics of treating diesel fuel. Those tests have shown that a commercial fuel additive that contains a cetane improver usually increases fuel economy enough to pay for the cost of treatment. Due to a much smaller sampling and sometimes significant changes in driving conditions over time, individuals have a harder time identifying a fuel economy increase. This means a fuel economy improvement has to be taken on faith, to some degree. Personally, I use a widely available commercial diesel fuel additive that advertises a range of properties, which include at a minimum: cetane booster, injector cleaner and additional fuel lubricity.

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Old 05-14-2012, 01:19 PM
Kennedy Kennedy is offline
Long Distance Crew Chief for BMDMAX
Join Date: Mar 2000
Location: Loyal WI US
Posts: 10,591

I run FPPF Total Power in all of my fuel. Absolutely mandatory in my opinion. As MP stated the slight gain in MPG generally offsets the cost of yteh additive and from there it's bonus...
Kennedy Diesel-owner
More than just a salesman-I use and test the products that I sell on a daily basis!
Superflow Lie Detector in house
2002 Chev K2500HD D/A CC Long LT 11.77@ 124mph at 7700# fuel only-e.t. needs help
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2012 GMC K3500SRW D/A CC Long LTZ Happy Birthday to me! Built 1 working day after my birthday and delivered 7 days later.
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