Synthetics and Harley – Davidson bikes is a topic of much discussion. HD, like most auto manufacturing companies, refused to accept synthetics for years. It was only recently that HD, the last remaining American manufacturer to still ostracize motorcycle synthetic oil, finally came out with their own synthetic. So, the company that refused to accept synthetics for 100 years finally has their own; SYN3.
Buy your bike from a good, quality bike manufacturer. Buy your synthetic motorcycle oil from a good, quality, motorcycle synthetic oil manufacturer. If you want to know the facts regarding synthetic motorcycle oil, please take a few minutes to view the online presentation “A Study Of Motorcycle Oil”. This motorcycle oil presentation is exhaustive, and provides good third party information, and is available on our site. The new Harley Davidson Syn3 has now been tested as well. It didn’t do so well.
Harley Davidson warranty and Amsoil
I’m sure you’ve heard the debate about synthetic oil impacting your warranty. It’s illegal for a manufacturer to void a warranty based on the brand of oil used. It’s called the Magnusson Moss Act. You can read it here, as well as the Amsoil warranty on oil and filters. Basically, manufacturers cannot specify a BRAND of oil, as long as the oil meets specifications.
You still read a lot of misinformation, but now you have access to the facts. For example, in 2007 the Harley Davidson Enthusiast magazine, which I subscribe to, had this question from a reader. “Would I void the warranty if this lubricant is not specified in the H-D owner’s manual?”
The editor’s answer; “SYN3 is the only synthetic motor oil that does not impact your 24-month, unlimited-mile factory warranty.” Of course, this is NOT TRUE. The next issue of the magazine, they had received dozens of replies objecting, and even a reply from Dean Alexander, VP at Amsoil. The Enthusiast clarified the issue in an interview with the Lubricants Category Manager at Harley, Mr. Larry Gutjahr. “No, that’s not true. We cannot and would not void a warranty for use of another brand of oil.” Larry Gutjahr, P&A Lubricants Category Manager, Harley-Davidson.
There have been millions of miles put on HD motorcycles using Amsoil. Any remaining concerns should be resolved by reviewing the test information mentioned here, as well as the warranty information. Amsoil is also now the official Harley oil of Sturgis, and Daytona Bike week, so the tide is turning. Amsoil is also the oil sponsor of the AMA Pro Daytona Sportbike race at Daytona, for those who don’t hate sportbikes.
Amsoil carries several weights of motorcycle specific oils, including;
10W-30 Advanced Synthetic Motorcycle Oil
AMSOIL Synthetic 10W-30 Motorcycle Oil is the result of extensive research, and it is specially formulated to excel in all areas unique to motorcycles, including high engine RPM, wet clutch lubrication, extreme pressure regions of gears and rust common to short drives and storage.
10W-40 Advanced Synthetic Motorcycle Oil
Advanced multi-functional formula for both domestic and foreign motorcycles. Recommended for high-performance liquid or air-cooled 4-stroke engines and transmissions and both 4- and 2-stroke motorcycles. Wet-clutch compatible. Not recommended where an API GL-4 or GL-5 gear oil is required.
20W-50 Advanced Synthetic Motorcycle Oil
Advanced multi-functional formula for both domestic and foreign motorcycles. Excellent in air-cooled motorcycle engines due to high heat resistance. Can be used in engines, transmissions and the primary chaincase. Not recommended where an API GL-4 or GL-5 gear oil is required.
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