You want the best engine oil for your 2011-2015 Mustang GT but don’t know which to choose, maybe we can help you decide. You definitely need to use synthetic engine oil if you want your 5.0 coyote to last a long time. Now of course we want to use the best, or close to the best synthetic engine oil in our Mustangs but there are many to choose from and reviews vary which confuses people on which brand to use.
Without going into the scientific make up of each brand of engine oil as there is plenty information on that out there already, we will just get to the point. The very best let’s say top 3 or 4 synthetic engine oils are not going to be much different from each other concerning friction, longevity and performance gains. All will give about same high grade engine protection (friction wear) and horsepower/torque gains, so to stress yourself out trying to figure out which brand of oil is slightly better is really not worth it, just choose one of the top brands and stick with it.
When it comes to choosing your brand of engine oil for your 2011-2015 Mustang GT you cannot go wrong using Royal Purple Synthetic Engine Oil or Castrol Synthetic Engine Oil. In virtually all testings of major brands of synthetic oil, these two excellent brands were always at the top. Both of these two engine oils stick to metal surfaces so your start up does not cause as much engine damage. We tested this out a few times on a few different Mustangs and found this to be true. Other top synthetic engine oils for example as the very popular Mobil 1 Synthetic oil failed to stick to the metal surface like Royal Purple or Castrol Synthetic, which is something that is of great benefit for the longevity and reliability of your Mustang GT 5.0 engine.
We routinely now use Royal Purple Synthetic Oil in all of our Mustangs and in our daily drivers as well. We chose to stick with Royal Purple over Castrol as we noticed when running Royal Purple our Mustang GT 5.0 engine ran noticeably quieter. Also it was seen on the dyno over and over that when running Royal Purple Synthetic Oil versus Castrol Synthetic Oil, the Royal Purple gave a tad more horsepower gain ( half a horsepower or .5 gain) This of course is not much but it still is better. Both of these excellent synthetic motor oils cost about the same, so just buy and use whichever is cheaper at the time and you simply cannot go wrong.
Yes, there may be a few other race oils out there that will be slightly better than these two top synthetic oils, but the cost will be much higher for very little gain and not to mention the fact that they will not be as easy to find, you will not find them at stores such as Walmart. You can find Royal Purple Synthetic Oil and Castrol Synthetic engine oils just about everywhere now, even at your local Walmart.
Now that you know which brand of synthetic oils to choose from for your 2011-2015 Mustang GT you should also use a good high quality engine oil filter to go along with your synthetic engine oil. You do not want to use the cheapest, you need a good high quality oil filter that passes all tests, this brings us to three excellent oil filters to choose from, K&N, Royal Purple and Wix, there simply is no better. We have been using K&N oil filters in all of our high performance Mustangs and other high performance vehicles for many years without any issues, so we stick with what works and we recommend you do the same.
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