According to the 2001 Ford Ranger Owner Guide :
For the 4.0 liter V6 engine :
The engine cooling system capacity is :
( with manual transmission / 13.0 liters / 13.7 U.S. quarts )
( with automatic transmission / 12.5 liters / 13.2 U.S. qyarts )
25 to 40 lbs
About 2.5 Quarts of 10w 40 wet clutch oil.
I'm not a mechanic / technician but I BELIEVE that is ( 40 to 60 PSI at 2,000 RPM ) for the oil pressure on a 3.0 liter V6 engine in a Ford Ranger
The polaris ranger speeds are, 500engine,40. 700engine,40-50. 800engine,55mph.
If coolant needs to be added and the owner does not know what kind is already in the engine, it should be drained and flushed before adding any new. Most coolants are appropriate, but it is not recommended to mix brands or types. Use a coolant safe for aluminum blocks or buy Yamaha brand coolant specifically for your model. The coolant should be premixed 50/50 or if it is not premixed, mix it 60% coolant and 40% water before adding.
40
amazon uk
$40+
DEXCOOL OR LONG LIFE,IF ITS NOT PREMIXED BE SUR TO MIX IT,60% COOLANT 40% WATER.
The Lone Ranger - 1949 Man Without a Gun 1-40 was released on: USA: 15 June 1950
Spyder Games - 2001 1-40 was released on: USA: 10 August 2001
50/50 50% Dex Coolant and 50% Distilled Water. This is assuming you did not buy a premixed gallon of coolant. This will protect you to -40 F.