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In which motorcycle models can SYN3® be used? SYN3® is an alternative lubricant product from Harley-Davidson®, and in particular, a formula that is very effective for high performance engines and hot climate applications. Harley-Davidson® continues to offer H-D® 360 Motorcycle Oil. Will H-D® 360 Motorcycle Oil be replaced by SYN3®? SYN3® is a proprietary blend, exclusively custom-blended for Harley-Davidson®. Over three years of laboratory bench testing, dynamometer testing under accelerated conditions, open road vehicle durability testing, closed course durability testing, and wear and deposit rating analysis was conducted on SYN3®. This product has been exclusively designed for Harley-Davidson® and is the only synthetic product TESTED and CERTIFIED by Harley-Davidson® engineering for use in H-D®/Buell® motorcycles. However, Harley-Davidson®, in close partnership with our suppliers, analyzed available petrochemical technology and developed a custom-blended candidate fluid that can be used in all three cavities of a Harley-Davidson®/Buell® motorcycle. Why is H-D® introducing a synthetic now?īecause Harley-Davidson® cannot test and certify all available synthetics on the market nor control their oil and additive formulations, we have discouraged their use. In the past, Harley-Davidson® did not recommend the use of synthetic oils in H-D®/Buell® motorcycles. Provides high temperature film strength, which means the lubricant maintains film thickness in high power output and high engine speed conditions, keeping the metal parts from rubbing against each other and resulting in less wear. Is formulated for reduced oil consumption, improved wear protection, high temperature detergency, and superior overall field performance. Offers improved film strength for superior wear protection at high temperature, and improved deposit control for a cleaner engine, transmission, and primary chain case. SYN3® Can be used in the engine, primary chain case, and transmission. What are the key benefits to using SYN3®?