Hi Sidney, I have a 3.0 L, or V6 in my 94 4Runner and if I run 5W30 in it, it doesn't last long at all so I've been running 10W30 for about 8 years now with no problems at all.
My 4Runner has about 218000kms on it, I have to change the 3 belts in it and until I heal up after surgery it will sit in my garage lol.
But try the 10W30, it works well for me, I had a guy do an oil change and within a few days she was down on the last "Marker" on the dip stick, so I phoned him and he had put 5W30 in it , then my heart began to beat again & I put the 10W30 in it, no problems since staying with the 10W30.
Ozzy