Mobil 1 55221 3309 Automatic Transmission Fluid - 1 Quart (Pack of 12)

As a dedicated DIY mechanic, I trust Mobil 1 synthetic products implicitly, and their 3309 ATF is no exception. This 12-quart pack is the only way to buy this fluid if you handle your own maintenance, offering both the highest quality protection and fantastic cost savings over purchasing single quarts at the auto parts store. The synthetic formula is where this fluid truly shines. After switching to Mobil 1, the transmission in my vehicle shifted noticeably smoother and quieter, especially during cold starts. It provides superior thermal stability, which is essential for protecting the transmission during heavy towing, hot climates, or stop-and-go traffic. It gives me peace of mind knowing the fluid is protecting critical internal components under the harshest conditions. The convenience of the 12-quart case is perfect. Whether you're doing a full fluid exchange or just a pan drop and refill, having the necessary volume on hand prevents frustrating last-minute runs to the store. This specific formula meets key manufacturer specifications and is a direct substitute for much more expensive dealer-branded fluids. If your vehicle calls for a high-quality 3309-spec fluid, this is the best protection you can buy in the most convenient package.

This stuff is great! I used it to replace the ATF in my 2004 Volvo V70R with 215k miles. I was hesitant to believe all the reviews saying you could feel the difference immediately, but its no joke. I flushed out my old fluid which was brown and no longer that nice red color. As soon as I took the car out for a drive on the highway I was amazed at how much smoother the shifting was. It became so much smoother, I didn't even know it could shift smoother. The car also pulls a lot nicer and feels like some power was restored. It has been close to almost 1k miles since I have changed the fluid and I have absolutely no negatives to report. Mobil did real great with this oil. This is also the cheapest you will find this oil. The 12 quarts provided enough for me that by the time I flushed out the twelfth quart, the fluid was clean and no longer brown. Unless your ATF is black and burnt, I would not hesitate to replace the entire contents of your autobox with this stuff.

did the trick

All delivered as promised. Excellent service.

Have been running this in AISIN AS69RC for a few years now with no issue. Fluid looks fine on factory flushes, trans doesn't overheat, shifts perfect (well, after being flashed with an update at the dealer, but that had nothing to do with fluid). Don't wait your money on the stuff from MOPAR/FCA, it's a marketing gimmick. Plenty of people running this and it does just fine.