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For years, Harley Davidson has claimed that synthetics have no place in your motorcycle, and their petroeum lubricants were the best you could do for your bike. This same time period saw great acceptance from all major vehicle manufacturers, and synthetic oil products from most major oil manufacturers. Several vehicles now come from the factory with synthetics installed. Request information and a catalog.
Then, in 2003, Harley finally came to their senses and said what everyone else knew for years; synthetic oil is better. They introduced their own product; Screamin' Eagle SYN3. Now they tell you that their synthetic is best for your bike. While it's true that SYN3 is much better than the old petroleum oils previously touted, there is conclusive evidence that there are even better products available. Synthetic motorcycle oil.
Please take a few minutes to review the comparisons below; the online voiceover presentation is particularly helpful, and goes a long way to explain how these tests are performed.
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Download the Complete
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Click here to watch a voice-over PowerPoint presentation
about the
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FEATURED INTERACTIVE TEST RESULTS |
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The interactive test results below offer a glimpse inside the testing that is conducted with each oil in the second edition of the "Study of Motorcycle Oils". To see how other oils compared to the AMSOIL products, simply click on their names on the left side of each graph, and their color-coded results will display. We will feature different tests on the page from time to time. If you want to know how all of the oils did on every test, you can download the entire document above. |
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1. Higher temperatures produce
greater volatility (evaporation).
Review the chart below to see how the compition compares to AMSOIL 20W-50 (MCV) |
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Click on the chart below to see the
interactive charts comparing these oils to AMSOIL 10W-40 (MCF) |
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![]() I ride, too. I started riding with Kawasakis back in the 1980's, with Kawasaki KZ, LTD, CSR, GPz, etc. Then, in 2003 I bought two Harleys and went to Sturgis. My wife and daughter both ride as well, having taken the Motorcycle Safety Foundation training. Here are some pictures of my current bikes; a 2003 Dyna WIde Glide, and a 2008 Nightster with Vance and Hines Short Shots. Nightster slideshow below, I also put forward controls on this bike. Slideshow below of Spawn the 2000 1200 kit hot rod Slideshow below of 2003 Dyna Wide Glide at Deals Gap. |
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