How many gallons is 120 lbs of 75 90 gear oil?

To convert 120 lbs of 75W-90 gear oil to gallons, you need to know the density of the oil, which is typically around 7.5 to 8.5 lbs per gallon. Using an average density of 8 lbs per gallon, 120 lbs would equal approximately 15 gallons (120 lbs ÷ 8 lbs/gallon = 15 gallons). However, if you use a density of 7.5 lbs per gallon, it would be about 16 gallons. Thus, the volume in gallons can range between 15 to 16 gallons depending on the exact density.