Best Synthetic Motor Oil Comparison for 5W-30 A5/B5 Specification

NOTE: Before we get into motor oil comparisons let’s look at the “problems” that exist when trying to compare manufacture data head to head…. and then we can understand the “solution”

Problem – lack of transparency with ASTM tests

NOTE: If there is a test that is blank it’s because the oil brand does not provide those test numbers to the consumer on their website. If their test numbers are good, why don’t they share them with us? We all know that when you’re proud of your test result whether it be a test in school or an ASTM Oil test the first thing you want to do is share your accomplishment with others. Perhaps they know their test numbers are not as good as their competition, so they don’t publish it, because that would imply their product isn’t as good as the competition. Like anything in life, do your own research and decide for yourself, my goal was to provide you with the available facts.

Would you trust a product from a company that doesn’t share its test results?

Most Oil companies don’t want you to know what these ASTM tests mean because they would lose sales if people could actually choose motor oil based on performance instead of marketing.

After looking at many oil brands I was surprised by the lack of transparency with ASTM tests.

Solution – With AMSOIL you choose motor oil based on performance instead of marketing

AMSOIL provides all of the most important ASTM Test results on every lubricant on their website. You can find all of the ASTM Test results on the product page under “Technical Specifications” > “Data bulletins”. Simple, straightforward and easy to find all the test numbers. 100% Transparency, nothing to hide.