"Keep up with scheduled maintenance, find a responsive and knowledgable mechanic willing to do good work . Replace sensors, fluids, clean engine with SEAFOAM , change pvc valve, hoses, sparkplugs, brakes, battery, transmission & differential fluid as recommended and you will keep it running. Service bearings, ujoints, grease moving parts drive train and will run smooth. Toyota is built to last if you deal with known issues like engine sludge /seal leaks before they get out of control. If you have good mechanic save the engine instead of replacing it as first option. Dealerships are limited in what they do. Independent mechanics are better option if reputable and gurantee work. "