The 2.5L Duratec engine can clearly go for more than 250,000 miles if maintained properly. This is a very well-known engine that has been used in a lot of Ford models. We know everything about its potential flaws and we can say it's a really good unit with basically no serious issues until it reaches very high mileage. The 3.0 Power Stroke is a 3.0-liter V6 turbo diesel engine with high-pressure common rail fuel injection system and two turbochargers. This Ford's brand new engine was introduced in 2018 as the new power unit option for top-selling Ford F-150 pickup trucks to compete with its primary competitor in the segment - the Dodge Ram 1500 with FCA's 3.0L EcoDiesel. I don't believe there is any major issues with the Duratec motor. Its rock solid. There will of course be the occasional person with a problem, but there is always a small risk with even the most reliable engines. For evidence, go look at Consumer Reports and TrueDelta reliability ratings. 625. Location. Silver Spring, MD (USA) Feb 20, 2005. #3. The bottom end of the V6 3.0 Duratec is very stout. It can usually handle around 400 whp before internals usually need to be built up. The car is a massive pig howeverand quite slow. It really needs about an 80 bhp for the weight class. The three most common Ford 3.5L Ti-VCT V6 engine problems have frustrated users the most: The Unexpected Failure Of The Water Pump. Problems With Oil Dilution. Issues With The Cam Torque Phasers. With extensive research, I have concluded that these are the three issues that have frustrated users the most. I will be getting into their detail so 5.0. Nov 25, 2020. #2. Personally I think any 3.0 will do you just fine. There are two major things to watch for - cam synchronizer failure, usually you hear a "chirping" noise when the engine is running, and rust/brown goo in the radiator. Ranger and Taurus 3.0s are notorious for some kind of chemical reaction in the cooling system that clogs Frisco, TX. Mar 4, 2011. #2. The Ford Motor Company owns rights to build and use the MZR generation of engines under their Duratec brand name for global service in its vehicles since 2003. As of 2011, Mazda will discontinue development of the MZR generation of engines to be replaced by their new SkyActiv generation of engines. Engine Reliability and Longevity. Ford’s Duratec Ti-VCT 105 hp engine is a testament to the brand’s commitment to building powertrains that stand the test of time. Renowned for its durability, this engine is engineered to serve as the reliable heartbeat of your vehicle for countless miles. From Ford Techs the ecoboost engines have had their issues but they are still very reliable. The duratecs are good but lack updates alot of the time until the point where they just get rid of the design for either a smaller ecoboost or a smaller duratec so I feel its hard to judge reliability There are tons of benefits that come alongside choosing the Ford 2.5 Liter Engine such as: It is extremely cost-efficient. The mechanics are extremely reliable. The durability of said motor is extremely high as compared to others. Not a lot of power is needed from the engine, so it lasts longer. xtE9.