Was up guys? im new but i will appreciate any help. i have a 91 4runner 3.0. for some odd reason my oil pressure drops and my temp increases. there are no leaks and it normally starts after about 10miles of driving it. i have replaced new temp sensor, thermostat, radiator and hoses. Theres no coolant leak and i keep up with oil changes. I have also notice a lack of power when i shift into 4 gear. any help... Thank you