The fuel injectors on your car will typically last between 50,000 and 100,000 miles. The length of time that the injector lasts has a lot to do with the type of gas that is used in the car and how often the various fuel filters are changed. Using lower grade gas will usually lead to the fuel injectors becoming gummed up. It's more about fuel use then hours. But they are related. You can expect a rebuild between 30000 and 40000 gallons of fuel use. So if you burn 1gph for 20000 hours you're still in the workable life. Asked by auditaylor Dec 02, 2015 at 10:39 PM about the 2006 Audi A6 3.2 quattro Sedan AWD. Question type: General. I'm going to buy an Audi A6 Wagon, and it currently has 131k miles. I want to. keep it for about four years and I live in a small town, so about 10-15k miles a. 5,000 hours on a properly maintained Yanmar . still a 'puppy'. 10,000 hours seems to be the upper limit on most Yanmars. Of course you do have to send the injectors out for recalibration/rebuild about every 2000 hrs. and the Injector pump out at 5000 hrs. if you want a 'perfect' engine. R. The average marine gasoline engine runs for 1,500 hours before needing a major overhaul. The average marine diesel engine will run for more than three times that long and log an average 5,000 hours under the same conditions. The number of hours that a marine engine runs is very dependent on the amount and quality of maintenance over the years. Final Thoughts. Overall, a properly cared-for Duramax engine should last over 300,000 miles. However, consumers report having Duramax's lasting in the 500,000-mile range! Nonetheless, proper maintenance is a must to increase the life expectancy of your engine. It should last the life of the car if you take care of it. The oil being dirty hurts the turbo first not the engine. My dads ALH has the origional turbo at 400k miles my brothers blew at 200k because we drove it pretty hard. Let it idle for a few seconds before you shut it off and let it get nice and lubed up before ragging on it. 18 months from now I may have to invest almost $4,000 for replacement of the timing belt and DPF . Seems like a lot of money to have to invest in a 2.5 year old vehicle with 125,000 miles. I love the car but it's really difficult to justify the added expense (more $ for TDI engine, cost of diesel fuel vs. gas, and DPF replacement). How long does your oil last in your car. The other question concerns how long your oil is good for in your engine - how long it "lasts" in your car. This is a much different question, by nature, than the first one. But like the first one, this is situation-dependent - except the modifier here is driving conditions instead of storage conditions. More than likely the late 04 and up injectors will (as a whole) do better than the 03 and early 04 injectors. Fuel pressure and fuel quality impact injector life (posted earlier). Oil quality and even oil type can impact injector life, and so can oil temperature. Even tuning and driving style can impact injector longevity. VRo7KMX.