OTC Diesel Fuel Hydrometer 6750

Helps troubleshoot engine performance issues by testing diesel fuel. Tests #1 and #2 grade diesel fuel. American petroleum institute (api) gravity reading gauges diesel fuel composition and combustion characteristics. Quickly troubleshoot engine performance problems. Fuel is drawn into the hydrometer tube which then floats the internal bulb float. The internal float contains a thermometer that is used to compensate the api reading for the highest accuracy. Instructions included. Hydrometer scale 30 to 110. Correction scale +2.5 to -5.0. Similar to oe tool #j-38641-d.

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