Use SAE 10w40 any major brand. To find the capacity park the vehicle on a level surface. Drain the oil pan and replace the filter. Add 5 quarts of oil and start the engine. Run for 1 minute and shut down. Wait 30 minutes and check the oil level. Add as necessary to reach the full mark. You now know the capacity.
5 qts. with a new oil filter.
5 quarts with oil filter
I believe the straight 6 cylinder engine in a 1965 Ford Mustang holds 4.5 U.S. quarts with engine oil filter change
4.5 quarts with filter change
According to one of the Ford Websites : For a 1965 Ford Mustang , 3.3 liter / 200 cubic inch inline six cylinder engine ( Motorcraft FL-1-A engine oil filter )
I believe that's 4.5 quarts with engine oil filter change for the 1965 Ford Mustang 200 cubic inch straight 6 cylinder engine
6 quarts if also changing the oil filter.
I believe the 170 cubic inch straight 6 cylinder takes 4.5 quarts with filter change
The 200 cubic inch straight 6 cylinder in a 1965 Ford Mustang takes : 4.5 quarts with engine oil filter change
On a 1965 Ford F-250 , 390 V8 engine ; The fuel filter will either be in the fuel line near the carburetor , or threaded into the carburetor ( at least that was the way for every carbureted Ford V8 that I have owned )
Engine Engine was created in 1965-05.
16 gallons