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Old 08-09-2012, 02:06 PM   #15
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Steve, I believe it connected directly to the old "Canuter" valve. Over use of this valve is caused by faulty friggate switch wiring. Eventually, the turbo will become tainted with halogen bulb fluid due to canuter valve blow-by. Is this what you read also?
The EPA hates Canuter valves and believed the frigate switch should be used to direct the halogen bulb fluid into the exhaust. We have to be able to use the halogen bulb fluid somewhere as the LEDs are taking over and everyone knows they don't use fluid.
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Old 08-09-2012, 02:15 PM   #16
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My second career was in the crude oil refining industry. You better be using something to assure lubricity, refining specs are not exact, mistake are made and bad fuel DOES get to market.
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Old 08-09-2012, 03:15 PM   #17
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"The Danes Are Coming"......probably less than .2 -.3 mpg. I check my mileage very carefully, including leveling the coach when I fuel up. Over the past year or so, I've spent a lot of time dialing in the fuel useage gauge on my SilverLeaf system and hand checking my results. I'm now at the point where I can show that I need 45.4 gallons of diesel and will actually take an amount within 2% of that.

With all that said, my coach performs better with the OptiLube. This past year I also added the Source Engineering fan and slowed down to about 59 mph. On a trip of 300 miles or more with the majority being on the freeway, I've been averaging 10.3mpg to 10.5mpg out of my 400ISL in a 30000 pound pusher. When I tow my 5500 pound truck I loose about one 1 - 1.2mpg's.

On short trips to local parks (under a 100 miles) where there is a lot of stopping and starting, I don't see the 10's, more around 8.8 to 9.3mpg.

Lastly, you'll find that long haul truckers and trucking companies will generally never add anything that would increase their bottom line, simple economics. The others that preach that Cummins or Cat doesn't recommend them have either never tried any additives or not willing to pay for them so they tell everyone they're no good. As I've said in the past, it's my coach, my money and my decision to use an additive, please don't try to impose your beliefs on me. If you don't like additives, don't use them!
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Old 08-09-2012, 03:54 PM   #18
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Diesel Kleen from the WalMart

keeps my fuel fresh , lubes injectors and boosts cetane count
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Old 08-09-2012, 04:21 PM   #19
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Cummins will tell you to be sure the cetane rating is a minimun of 45 when the temps are below freezing and a minimum of 42 when the temps are above freezing.
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Old 08-09-2012, 05:22 PM   #20
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The EPA hates Canuter valves and believed the frigate switch should be used to direct the halogen bulb fluid into the exhaust. We have to be able to use the halogen bulb fluid somewhere as the LEDs are taking over and everyone knows they don't use fluid.
With the new LED's you have to add a parboyancy coil in series with the LED and the secondary tap goes to the flux capacitor for proper resonance.
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Old 08-09-2012, 05:32 PM   #21
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If there was verifiable proof that additives really increased mileage I think it would be all over the media. My old truck driver friends pretty much tell me it's BS and just run good clean fuel. Millions of miles of experience. Who am I to judge that. I just burned millions of gallon of Jet fuel during my career.
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Old 08-09-2012, 06:09 PM   #22
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Based on my careful reading of Mechanix Illustrated in the 50s, what you really need is a fish carburetor. Much better than magnets! Now you say that your diesel doesn't have a carburetor? Well, there you go, that is your problem. Apparently, however, the oil companies have suppressed the fish carburetor, but tests done under wraps in Area 51 suggest ...
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Old 08-09-2012, 06:20 PM   #23
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Opti-Lube XPD contains:



Petroleum naphtha: Solvent-Refined Heavy

Trimethylbenzene: solvent
2-Ethylhexyl nitrate: cetane enhancer

1 ,2,4-Trimethylbenzene: solvent
1 ,3,5-Trimethylbenzene: solvent
Propylene glycol ethers: are commonly used as solvents
Xylene: xylene refers to a group of three benzene derivatives which are used as a solvent
Cumene: is used as a thinner for paints,
Naphthalene: is a natural constituent of coal tar (approximately 11%) (HSBD, 1995). It is present in gasoline and diesel fuels. Naphthalene is used as a moth repellent,
Ethylbenzene: is an organicchemical compound which is an aromatichydrocarbon. Its major use is in the petrochemical industry as an intermediate compound for the production of styrene, which in turn is used for making polystyrene, a commonly used plastic material

So-- Where is the LUBE?
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Old 08-09-2012, 08:09 PM   #24
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WOW.....I didn't mean to cause such a stir...but love the satire. I had a long time Cummins mechanic recommend an additive for a lubricant because he said the newer fuels have had it taken out by lowering the sulfur content. And I've had others speak of possible fuel milage improvements with a sustained treatment major trucklines. So my curiosity got the best of me and I wanted to see what was on here.....and I got it!...lol
However thanks for all the input.
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Old 08-09-2012, 08:48 PM   #25
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I agree with Dons2346 - that stuff is all snake oil!
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Old 08-09-2012, 10:07 PM   #26
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It's a flux capacitor!!! And it needs Plutonium. Doc Brown can fix you up.

Flux capacitors don't give the boost you need. You really have to use a generator and just to keep it "green" I prefer the crystals
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Old 08-09-2012, 10:24 PM   #27
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WOW.....I didn't mean to cause such a stir...but love the satire. I had a long time Cummins mechanic recommend an additive for a lubricant because he said the newer fuels have had it taken out by lowering the sulfur content. And I've had others speak of possible fuel milage improvements with a sustained treatment major trucklines. So my curiosity got the best of me and I wanted to see what was on here.....and I got it!...lol
However thanks for all the input.
The lubricity testing linked earlier used virgin diesel fuel with no lubricity additives. All fuel you buy on the market has the lubricity additives in it. I used to use after market additives, now I don't. Haven't noticed any difference.
Cummins says it takes 145,000 miles to establish a baseline fuel mileage figure. I don't think most of us will ever see that many miles on one rig to know what we actually get, nor can we measure the fuel accurately enough to get .1 or .2 mpg differences. Cummins testing also shows that the driver can make 30% difference between the best and least efficient driver.
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Old 08-10-2012, 08:32 AM   #28
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Spend your money on something that will warn you if that boost pump on that 8.3 is about to give out. That is a bad trip. I also burned a bunch of jet fuel over 30+ years and learned to always check the fuel caps and check for leaks. Good advice here.
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