2 qts
A Troy-Bilt 21 inch cutting blade 190cc 6.7 HP engine does not need an oil and gas mix. It is a 4 cycle engine which keeps the oil and gas separate for maximum efficiency.
64 oz per the manual.
21/2qrts 20w50
14 - 21 ft lb or 19-28.5 Nm
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381 gallons of oil divide by 21 gallon containers = 18 full containers which will use 378 gallons of oil. Container 19 will have only 3 gallons in it.
The oil capacity for the International 4700 varies depending on the engine. Typically, it ranges from 19 to 21 quarts for a diesel engine. It's recommended to consult the owner's manual or contact a mechanic for the specific oil capacity of your vehicle.
Clean the area around the oil drain tube and dip stick. Remove the plug and the dip stick. Allow time for complete drainage. Re-install the plug and route the hose next to the engine. Fill the crankcase with fresh oil.
You failed to list engine size and make. If it has a horizontal shaft 5−7 h.p. Briggs & Stratton non-Vanguard engine the total oil capacity is 20 ounces. If it is a Vanguard 6 h.p. engine the capacity is 24 ounces. Add 20 ounces and then check the oil level. If it has a Tecumseh engine it can be 20 or 21 ounces. Do not overfill.
Briggs & Stratton part # 491056 NAPA filter # 1348
twenty eight ounces