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Competitive Motor Oil Brands
How Does Royal Purple Compare to Mobil 1?
How does Royal Purple stack up to Mobil 1? It seems everyone is pushing it.
Let's put it this way: Mobil 1 is the World's Leading Synthetic Motor Oil Brand Mobil 1 technology has been selected as original equipment by leading car builders such as those who manufacture the ...
Does Mobil 1™ Extended Performance Result in More Engine Wear as Amsoil Claims?
Amsoil has recently published a study showing that using Mobil 1™ Extended Performance 5W-30 results in more engine wear than even some conventional 5W-30 motor oils. Can this possibly be true? (It is...
That is a misleading claim. Some companies use meaningless bench tests to demonstrate superior performance. Although bench testing may be used in industry engine specifications, they are rarely used a...
Why Doesn't Mobil 1 Formally Respond to Amsoil Claims?
I have used Mobil 1 synthetic motor oils for many years. I have been very pleased with Mobil 1 and plan to continue using it. Why doesn't Mobil 1 counter any of the claims made by Amsoil? Amsoil certa...
We believe that most knowledgeable consumers realize the kind of engine testing and OEM endorsements associated with the Mobil 1 brand. At ExxonMobil we let our customers, endorsements, and extensive ...
Does Mobil 1™ or Amsoil Provide Best Protection for Longer Drain Intervals?
I read on the internet that Amsoil has interval change of 25,000 miles and say they back it up with oil testing done on fleet commercial trucks. What is your opinion how Mobil 1™ vs Amsoil compares? C...
We certainly can’t speak for AMSOIL. But you can see the kind of testing we put our oil through by looking at the Las Vegas field testing we completed with Mobil 1™ motor oils in Las Vegas taxis. In a...
Response to Amsoil Competitive Claims
What is your position/response to the 4 ball wear test Amsoil states on their website? Do you agree with the test results or are there other test results you could point me to. Thanks
The 4-ball wear test is a test designed to evaluate the performance of a gear oil. The 4-ball wear test is not included as a part of any industry-wide recognized engine oil specifications (e.g. ILSAC ...
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