Average Reviews:
(More customer reviews)I bought 6 quarts of this for my 2005 Chevy Tahoe 5.3 liter V8 (56K miles) after reading all of the high reviews and buying into all of the hype, but after trying it out for 5K miles, I'm not impressed.
Don't get me wrong, this oil does exactly what it is supposed to do; lubricates, cleans, and protects the engine. But as far as delivering more horsepower; higher-torque; and a cooler running engine, I saw absolutely no difference over the CONVENTIONAL oil I had just switched from. Running conventional oil, my Tahoe saw 15.8 MPG, and an internal engine temperature consistently between 201-205 degrees F. The temp and MPG after 5K miles of running Royal Purple? 15.7 MPG and 201-205 degrees F. I have also noticed no difference in engine sound or torque as many others have mentioned in reviews.
I honestly believe that many people experience dramatic results with Royal Purple only because they also change out their coolant, differential oil, transmission oil, and air filters at the same time.
Bottom line is that I ran 6 quarts of 5W30 RP with a brand new K&N filter for 5K miles after switching from 50K miles of conventional oil, and saw absolutely no difference.
Also, in the weeks since I purchased RP, I've seen many of their "comparison test" videos on you tube, and the way the conduct all of their tests is laughable. They change variables so many times throughout each test that it becomes pointless to compare. I even saw one where they ran 10W30 conventional and 5W30 RP as a direct comparison. They clearly think we are all idiots.
Save your money. I will be switching to Mobil 1 next oil change due to their lower cost and solid reputation. I tried the "boutique" oil. Never again.
All of you RP zombies and employees can feel free to bombard me with your negative comments...
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