6.6
5.5 quarts of 5w-30 with oil filter change.
5 quarts
It calls for transmission fluid =]
10w30
With great difficulty
6.5 quarts for the v8
5.5
2002 Toyota 4Runner Sport I use Mobil 1 15w50 synthetic with 5k change intervals; all other fluids are replaced using Red Line Racing synthetic products.
I mean, is the gear oil synthertic or not?
If you can try using Toyota oil. It is just right for 100K engines.
Under the engine block !