Fluids, Filters, and Things to Maintain
 

I have a 2013 Audi A4 B8.5 2.0T Quattro gasoline/petrol. My goal is to keep it alive as long as possible without throwing money away. I've been trying to gather a full list of fluids, filters, and other things that need to be replaced and this is what I've come up with so far. It's based on the Audi maintenance schedule and other research. It's a little annoying because Audi clearly left some things off on the maintenance schedule. Please share your input.

Engine oil and filter: drain and replace every 10k miles (I know this is a touchy subject, but I've yet to find anyone have problems while sticking to a 10k interval oil change, and again, the point is to keep it alive without throwing away money)
Engine air filter: replace every 55k miles
Spark plugs: replace every 40k miles (with the OEM NGK platinum plugs)
Brake fluid: flush and replace every 2 years
Transmission fluid and filter: drain and replace (not flush) every 60k miles
Rear differential fluid: replace every 60k(?) miles
Coolant: flush every 85k(?) miles
Fuel filter: replace every 85k(?) miles

Perhaps most importantly, did I forget anything? This doesn't include things that need to be cleaned (like the space beneath the plenum panel) or other miscellaneous accessories that aren't critical to the life of the vehicle (such as the cabin filter or adding windshield washer fluid).

IF YOU HAVE A QUATTRO U DO NOT NEED TO DRAIN AND FILL THE TRANSMISSION FLUID. REAR DIFFERENTAIL FLUID DOES NOT TO BE REPLACED. YOUR VEHICLE DOES NOT HAVE A FUEL FILTER YOU CAN CHANGE OUT. THE FUEL FILTER IS WITH THE FUEL PUMP. I WORK AT A DEALERSHIP AND NEVER CHANGE ANY OF THESE FLUIDS AND I SEEN A4S GO UP TO 220 WITH NO ISSUE. ONLY THING TO WATCH OUT FOR IT THE TIMING CHAIN. I WOULD SAY GET THAT CHANGED OUT WITH NEW UPDATED PARTS.

Maybe you should look for the manual for the car. That will likely have more specific information.

Trust me, I've read it all. Finding the truth in this has been really difficult. I can't tell if this is part of a planned obsolescence scheme from Audi, but everyone else seems to be very adamant (including ZF, the supplier of the transmission) that the transmission fluid should be drained and refilled, along with a new filter, every 60k miles or 8 years. I contacted ZF and they confirmed this. Some people suggest the fluids in the differentials (I think there's a front, center, and back diff?) should be replaced as well.

Here's the thread I've been reading (I would post there put AudiWorld seems to be much better than Audizine... I've seen adware on that site. https://www.audizine.com/forum/showt...Lifetime-fluid

The fuel filter absolutely can be replaced: