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Old 06-12-2012, 01:10 PM   #15
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Quote:
Originally Posted by Ray,IN View Post
Opti-lube is rated #2 diesel fuel additive in this HFRR test Lubricity Additive Study Results - Diesel Place : Chevrolet and GMC Diesel Truck Forums. I have difficulty finding it on the road, and usually wind up buying FPPF diesel fuel additive (1 oz to 30G) which is #3. Number 1 rated is B2- bio-diesel blend.
The bottom line, the test results plainly show an additive is needed for engine longivity.
The test you quote used UNTREATED ULSD fuel so no lubricity additives were added before the testing. There's really no way to know if the additive is needed when using fuel out of the pump. It would be beneficial if you somehow got untreated fuel though.
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Old 06-12-2012, 04:05 PM   #16
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Quote:
Originally Posted by Mr_D
The test you quote used UNTREATED ULSD fuel so no lubricity additives were added before the testing. There's really no way to know if the additive is needed when using fuel out of the pump. It would be beneficial if you somehow got untreated fuel though.
So an additive might work as extra insurance/protection for the lubricity of the diesel fuel in a $20k plus engine?
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Old 06-12-2012, 05:12 PM   #17
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Stop and think about all the trucks on the highways and all the miles driven each year. These trucks are NOT destroying their engines because of the fuel. This whole lubricity of diesel fuel thing is a farce designed to sell additives. If engines where failing then all heck would be breaking loose. I have talked to several truckers with over a million milese on their rigs without using any additives. The only thing they did was maintain them correctly on changing oil and filters.
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Old 06-12-2012, 08:38 PM   #18
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And the EU (cetane number 51) has speced cetane ratings that are higher than the US (cetane number 40).
Would information from a diesel pump manufacturer mean more than fuel additive manufacturers? If so start here http://www.arb.ca.gov/fuels/gasoline...22003bosch.pdf
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Old 06-12-2012, 09:42 PM   #19
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I knew you wouldn't be able to let this one go by. You know.....you might just be wrong once. I do see better power and improved mileage.

Just like the last time this came up, it's not your money, not your engine....so please don't try to impart your beliefs on everyone else. There are dozens of reasons why Cat or Cummins aren't going to make any recommendations and thera are huge financial reasons why trucking companies would not participate.
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