the lifespan of any engine will totally depend on how much you look after it. theoretically it can last for decades and decades.
While the age depends on how well the truck has been maintained, Toyota trucks can often go for 250,000 miles before needing a new engine.
Toyota 3AU Engine specs
Is the 08 3.5 toyota engine interference
The Toyota 4y engine is a combination of the Toyota T engine and the Toyota R engine and is used mostly in commercial and off-road vehicles. The firing order for the Toyota 4y engine is 1-3-4-2.
What Cressida engine will fit to a Toyota pickup model19
The 2012 Toyota 4Runner has a V6 engine.
The 2014 Toyota Avalon has a V6 engine.
The 2012 Toyota Avalon has a V6 engine.
The 2014 Toyota Tundra has a V6 engine.
The 2005 Toyota Avalon has a V6 engine.
The 2012 Toyota Sequoia has a V8 engine.