Royal Purple11755 Max-Tane Total Diesel Fuel Performance - 20 oz. Can

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This is the cheapest I can find this exact product anywhere, I use it in my VW Jetta TDI 2.0About 1/5 of the can for a 15 Gal tank, as this stuff is concentrated.I'm at 150,000 miles as of writing this, I like to run this twice a year (4-5 consecutive fill ups at a time) keeps the fuel delivery / throttle response, and engine running smooth. I have never had any codes kick on relating to the DPF/Regen system since using this. Also works exceptionally well as an anti-gel for freezing temperatures - easy start every time (tested in Upstate NY)

I was researching the cause of a really rough idle. I went through maintenance manual dance of changing a damping adjuster, etc, etc, but not much improvement came. But in the research low cetane rating kept getting mentioned here and there as a cause of rough idle. From what I read US diesel fuel has low cetane value (around 40 to 45) rather than 52 minimum as legally required in Europe. When I mixed this MAX TANE stuff into my fuel at the minimum dosage (1 ounce to 5 gallons) I was soon getting a smoother idle. The idle went between just fine mostly and occasionally a bit rough. At the next tank I went 1 ounce to 4 gallons and then she just purred and has ever since. I have been using this stuff for about 12 months and now I swear by it. Also: Starting is quicker, throttle response is clearly better, more power is had too. The car is a 1985 Mercedes 300D.

Have used this product for several years in my Ram 3500 diesel.

Significant improvement in my city mpg.I typically get 16-17 mpg in the city and about 20-21 mpg at 65mph and 14mpg towing my 5th wheel at roughly 60 mph +-10mph. I've run this in the last 3 tanks of fuel and averaged 20 mpg city driving. I mix it 1.5 to 2 times stronger than the minimum recommended. My engine is running quieter and smoother.I have an injector that's going bad and sticks open but sounds much better now. NOTE: just before using royal purple I used seafoam in my fuel bowl to hot soak my injectors, this may have affected my mpg.No highway driving yet but I have a trip coming up soon.I have a 96 F350 4x4 single cab 7.3L turbo diesel with a standard trany. I have used two chips with little to no change except for smoke. I accelerate a little faster than most drivers but I try not to