A question was posted Nov 20 by Plowboy in regard to ultra-low sulfur diesel and damage in older injection systems. I found some test data on wear-protection and costs with various additives. This forum won't let me post the entire list, but here are a few. The overall best buy seems to be using two-stroke oil mixed at a ratio of 1 to 200.Here are some - with #1 giving the best protection - but perhaps the not the best buy. PURPOSE: The purpose of this research was to determine the ability of multiple diesel fuel additives to replace the vital lubricity component in ULSD (Ultra Low Sulfer Diesel) fuel. THE RESULTS: These results are listed in the order of performance in the HFRR test. The baseline fuel used in every test started at an HFRR score of 636. The score shown is the tested HFRR score of the baseline fuel/additive blend. Also included is the wear scar improvement provided by the additive as well as other claimed benefits of the additive. Each additive is also categorized as a Multi-purpose additive, Multi-purpose + anti-gel, Lubricity only, non-conventional, or as an additive capable of treating both gasoline and diesel fuel. As a convenience to the reader there is also information on price per treated tank of diesel fuel (using a 26 gallon tank), and dosage per 26 gallon tank provided as “ounces of additive per 26 gallon tank”. In Order Of Performance: 1) 2% REG SoyPower biodiesel HFRR 221, 415 micron improvement. 50:1 ratio of baseline fuel to 100% biodiesel 66.56 oz. of 100% biodiesel per 26 gallons of diesel fuel Price: market value 2)Opti-Lube XPD Multi-purpose + anti-gel cetane improver, demulsifier HFRR 317, 319 micron improvement. 256:1 ratio 13 oz/tank $4.35/tank 3)FPPF RV, Bus, SUV Diesel/Gas fuel treatment Gas and Diesel cetane improver, emulsifier HFRR 439, 197 micron improvement 640:1 ratio 5.2 oz/tank $2.60/tank 4)Opti-Lube Summer Blend Multi-purpose demulsifier HFRR 447, 189 micron improvement 3000:1 ratio 1.11 oz/tank $0.68/tank 5)Opti-Lube Winter Blend Muti-purpose + anti-gel cetane improver HFRR 461, 175 micron improvement 512:1 ratio 6.5 oz/tank $3.65/tank 6)Schaeffer Diesel Treat 2000 Multi-purpose + anti-gel cetane improver, emulsifier, bio-diesel compatible HFRR 470, 166 micron improvement 1000:1 ratio 3.32 oz/tank $1.87/tank 7)Super Tech Outboard 2-cycle TC-W3 engine oil Unconventional (Not ULSD compliant, may damage 2007 or newer systems) HFRR 474, 162 micron improvement 200:1 ratio 16.64 oz/tank $1.09/tank 8)Stanadyne Lubricity Formula Lubricity Only demulsifier, 5% bio-diesel compatible, alcohol free HFRR 479, 157 micron improvement 1000:1 ratio 3.32 oz/tank $1.00/tank 9)Amsoil Diesel Concentrate Multi-purpose demulsifier, bio-diesel compatible, alcohol free HFRR 488, 148 micron improvement 640:1 ratio 5.2 oz/tank $2.16/tank 10)Power Service Diesel Kleen + Cetane Boost Multi-purpose Cetane improver, bio-diesel compatible, alcohol free HFRR 575, 61 micron improvement 400:1 ratio 8.32 oz/tank $1.58/tank 11)Howe’s Meaner Power Kleaner Multi-purpose Alcohol free HFRR 586, 50 micron improvement 1000:1 ratio 3.32 oz/tank $1.36/tank 12)Stanadyne Performance Formula Multi-purpose + anti-gel cetane improver, demulsifier, 5% bio-diesel compatible, alcohol free HFRR 603, 33 micron improvement 480:1 ratio 6.9 oz/tank $4.35/tank 13)Used Motor Oil, Shell Rotella T 15w40, 5,000 miles used. Unconventional (Not ULSD compliant, may damage systems) HFRR 634, 2 micron improvement 200:1 ratio 16.64 oz/tank price: market value 14)Lucas Upper Cylinder Lubricant Gas or diesel HFRR 641, 5 microns worse than baseline (statistically insignificant change) 427:1 ratio 7.8 oz/tank $2.65/tank 15)B1000 Diesel Fuel Conditioner by Milligan Biotech Multi-purpose, canola oil based additive HFRR 644, 8 microns worse than baseline (statistically insignificant change) 1000:1 ratio 3.32 oz/tank $2.67/tank 16)FPPF Lubricity Plus Fuel Power Multi-purpose + anti-gel Emulsifier, alcohol free HFRR 675, 39 microns worse than baseline fuel 1000:1 ratio 3.32 oz/tank $1.12/tank 17)Marvel Mystery Oil Gas, oil and Diesel fuel additive (NOT ULSD compliant, may damage 2007 and newer systems) HFRR 678, 42 microns worse than baseline fuel. 320:1 ratio 10.4 oz/tank $3.22/tank 18)ValvTect Diesel Guard Heavy Duty/Marine Diesel Fuel Additive Multi-purpose Cetane improver, emulsifier, alcohol free HFRR 696, 60 microns worse than baseline fuel 1000:1 ratio 3.32 oz/tank $2.38/tank 19)Primrose Power Blend 2003 Multi-purpose Cetane boost, bio-diesel compatible, emulsifier HFRR 711, 75 microns worse than baseline 1066:1 ratio 3.12 oz/tank $1.39/tank
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