Fuel Additives and BTU's - Diesel Truck Forum - TheDieselGarage.com
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post #1 of 2 (permalink) Old 12-06-2006, 07:55 PM Thread Starter
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Fuel Additives and BTU's

Was just wondering if anyone knows of an additive that is known to raise the btu's of ulsd back up to what they were before. Several additives state a raise in cetane index, but that alone isn't going to get my fuel mileage or power back
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post #2 of 2 (permalink) Old 12-06-2006, 08:34 PM
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Frankly, there is very little difference in the heating value of ULSD (15 ppm sulphur) and LSD (500 ppm sulphur). The difference is so small that you should not be able to tell in your mileage.

Your power should not decline with ULSD. Since the increased refining actually works to raise the cetane of the diesel, you may notice reduced engine noise and faster starting.

You may have some problem that is decreasing your mileage and performance, but the problem is not related to the LSD to ULSD switch.
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