you would need 23.9742267 kg/m3 oil per liter..
1 fluid ounce = 0.00625 gallons.
1 litre is 0.21996925 imperial gallons, or 0.26417205 US gallons.
1 liter is 0.26 gallons.
One fluid ounce equates to about 0.02957 liter.
0.6100000000000001
5 US gallons = 5 x 128 ounces = 640 ounces cost of 1 ounce = 130.00/640 = 0.203125
That is about 3.9 US gallons
Divide by 128. About five cents an ounce.
250 liters is 66.043 US gallons.
37 US gallons = about 140.060 L37 UK gallons = about 168.205 L
Three liters is 101.442 US fluid ounces.
If 1 oz treats 2.5 gallons then all you need to do is divide 1 by 2.5 to find out how much is required for 1 gallon. The answer would be 2/5ths of an ounce, which is 0.4 oz.