{"id":1715,"date":"2025-06-25T13:37:14","date_gmt":"2025-06-25T06:37:14","guid":{"rendered":"https:\/\/www.dextrous-lubricant.com\/product\/10w-40-synthetic-dirt-bike-oil\/"},"modified":"2025-08-13T22:11:00","modified_gmt":"2025-08-13T15:11:00","slug":"10w-40-synthetic-dirt-bike-oil","status":"publish","type":"product","link":"https:\/\/www.dextrous-lubricant.com\/en\/product\/10w-40-synthetic-dirt-bike-oil\/","title":{"rendered":"10W-40 Synthetic Dirt Bike Oil"},"content":{"rendered":"

\"\"\u00a0 \u00a010W-40 Synthetic Dirt Bike Oil<\/span><\/a><\/p>\n

Key Benefits<\/strong><\/h2>\n

\ud83c\udfcd\ufe0f Exceptional Clutch Feel and Performance<\/strong><\/h3>\n
    \n
  • \n

    Specially engineered to maintain superior friction durability<\/strong>, helping to:<\/p>\n

      \n
    • \n

      Prevent clutch slippage<\/strong><\/p>\n<\/li>\n

    • \n

      Reduce clutch wear<\/strong><\/p>\n<\/li>\n

    • \n

      Eliminate chatter or vibration<\/strong><\/p>\n<\/li>\n<\/ul>\n<\/li>\n

    • \n

      Provides consistent clutch feel for dirt bike riders in competitive racing or off-road riding, boosting rider confidence under demanding conditions.<\/p>\n<\/li>\n<\/ul>\n

      \ud83e\uddea Clutch Feel Testing:<\/strong><\/h4>\n
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      • \n

        A simulated race-start test showed that:<\/p>\n

          \n
        • \n

          After 32 laps<\/strong>, AMSOIL 10W-40 still delivered excellent clutch feel.<\/p>\n<\/li>\n

        • \n

          The clutch plates remained clean and in good condition<\/strong>.<\/p>\n<\/li>\n<\/ul>\n<\/li>\n

        • \n

          In contrast, OEM-filled engine oils<\/strong> degraded clutch feel significantly after only 16 laps<\/strong>, with clutch plates showing discoloration and noticeable wear (as illustrated in test images).<\/p>\n<\/li>\n<\/ul>\n

          \n

          \u2699\ufe0f Superior Wear Protection<\/strong><\/h3>\n
            \n
          • \n

            Formulated for high-RPM dirt bike engines which generate intense heat and shear forces<\/strong>.<\/p>\n<\/li>\n

          • \n

            Uses a fully synthetic base oil<\/strong> combined with proprietary anti-wear additives<\/strong> developed by AMSOIL.<\/p>\n<\/li>\n

          • \n

            Forms a durable protective film<\/strong> on components such as:<\/p>\n

              \n
            • \n

              Gears<\/p>\n<\/li>\n

            • \n

              Pistons<\/p>\n<\/li>\n

            • \n

              Bearings<\/p>\n<\/li>\n<\/ul>\n<\/li>\n

            • \n

              Helps maximize engine performance and longevity.<\/p>\n<\/li>\n<\/ul>\n

              \n

              \ud83c\udfc1 Proven in Professional Racing<\/strong><\/h3>\n
                \n
              • \n

                AMSOIL 10W-40 Dirt Bike oil has been tested and validated in real-world conditions and professional competitions<\/strong>.<\/p>\n<\/li>\n

              • \n

                Feedback from pro racers<\/strong> and data from both field tests and lab testing<\/strong> were used to fine-tune the formulation.<\/p>\n<\/li>\n

              • \n

                The goal: optimal clutch control<\/strong>, engine protection<\/strong>, and durability<\/strong> for high-performance dirt biking.<\/p>\n<\/li>\n<\/ul>\n

                \n

                \ud83d\udd27 Recommended Applications<\/strong><\/h2>\n
                  \n
                • \n

                  Suitable for 4-stroke dirt bikes<\/strong> that require SAE 10W-40<\/strong>, including:<\/p>\n

                    \n
                  • \n

                    Honda\u00ae, Yamaha\u00ae, Kawasaki\u00ae, Suzuki\u00ae, Husqvarna\u00ae<\/strong>, etc.<\/p>\n<\/li>\n<\/ul>\n<\/li>\n

                  • \n

                    Also compatible with 2-stroke bikes<\/strong> with separate engine and transmission systems (e.g., Honda CRF).<\/p>\n<\/li>\n<\/ul>\n

                    \ud83c\udff7\ufe0f Meets or Exceeds the Following Standards:<\/strong><\/h3>\n
                      \n
                    • \n

                      JASO MA<\/strong> (wet clutch compatibility)<\/p>\n<\/li>\n

                    • \n

                      API SG, SJ, SH, SL<\/strong><\/p>\n<\/li>\n<\/ul>\n

                      \n

                      \ud83d\udd04 Oil Change Interval<\/strong><\/h2>\n
                        \n
                      • \n

                        Follow the OEM recommendation<\/strong> as specified in the owner’s manual for your dirt bike.<\/p>\n<\/li>\n

                      • \n

                        Designed to withstand demanding conditions<\/strong>, but change interval depends on how the bike is used (e.g., competition, trail riding, etc.).<\/p>\n<\/li>\n<\/ul>\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n
                        TYPICAL TECHNICAL PROPERTIES<\/strong><\/td>\n<\/tr>\n
                        AMSOIL 10W-40 Synthetic Dirt Bike (DB40)<\/strong><\/td>\n<\/tr>\n
                        Kinematic Viscosity @ 100\u00b0C, cSt (ASTM D445)<\/td>\n14.2<\/td>\n<\/tr>\n
                        Kinematic Viscosity @ 40\u00b0C, cSt (ASTM D445)<\/td>\n93.5<\/td>\n<\/tr>\n
                        Viscosity Index (ASTM D2270)<\/td>\n156<\/td>\n<\/tr>\n
                        Flash Point, \u00b0C (\u00b0F) (ASTM D92)<\/td>\n246 (475)<\/td>\n<\/tr>\n
                        Fire Point, \u00baC (\u00baF) (ASTM D92)<\/td>\n254 (489)<\/td>\n<\/tr>\n
                        Pour Point, \u00b0C (\u00b0F) (ASTM D97)<\/td>\n-44 (-47)<\/td>\n<\/tr>\n
                        NOACK Volatility, % weight loss (g\/100g) (ASTM D5800)<\/td>\n4.0<\/td>\n<\/tr>\n
                        High-Temperature\/High-Shear Viscosity @150\u00baC, 1.4 x 106 s-1, cP (ASTM D5481)<\/td>\n4.1<\/td>\n<\/tr>\n
                        Four-Ball Wear Test (ASTM D4192 @ 40 kgf, 150\u00b0C, 1800 rpm, 1 hr) scar, mm<\/td>\n0.39<\/td>\n<\/tr>\n
                        Foam (ASTM D5182, Sequence I, II & III)<\/td>\n0\/0, 20\/0, 0\/0<\/td>\n<\/tr>\n
                        Total Base Number<\/td>\n6.62<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

                         <\/p>\n","protected":false},"excerpt":{"rendered":"

                        \u00a0 \u00a010W-40 Synthetic Dirt Bike Oil Key Benefits \ud83c\udfcd\ufe0f Exceptional Clutch Feel and Performance Specially engineered to maintain superior friction durability, helping to: Prevent clutch slippage Reduce clutch wear Eliminate chatter or vibration Provides consistent clutch feel for dirt bike riders in competitive racing or off-road riding, boosting rider confidence under demanding conditions. \ud83e\uddea Clutch […]\n","protected":false},"featured_media":1392,"template":"","meta":[],"product_brand":[],"product_cat":[61],"product_tag":[],"class_list":{"0":"post-1715","1":"product","2":"type-product","3":"status-publish","4":"has-post-thumbnail","6":"product_cat-dirt-bike","8":"first","9":"instock","10":"shipping-taxable","11":"product-type-simple"},"yoast_head":"\n10W-40 Synthetic Dirt Bike Oil - dextrous-lubricant<\/title>\n<meta name=\"robots\" content=\"noindex, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"10W-40 Synthetic Dirt Bike Oil - dextrous-lubricant\" \/>\n<meta property=\"og:description\" content=\"\u00a0 \u00a010W-40 Synthetic Dirt Bike Oil Key Benefits \ud83c\udfcd\ufe0f Exceptional Clutch Feel and Performance Specially engineered to maintain superior friction durability, helping to: Prevent clutch slippage Reduce clutch wear Eliminate chatter or vibration Provides consistent clutch feel for dirt bike riders in competitive racing or off-road riding, boosting rider confidence under demanding conditions. \ud83e\uddea Clutch [...]\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.dextrous-lubricant.com\/en\/product\/10w-40-synthetic-dirt-bike-oil\/\" \/>\n<meta property=\"og:site_name\" content=\"dextrous-lubricant\" \/>\n<meta property=\"article:publisher\" content=\"https:\/\/www.facebook.com\/DextrousLubricant.Amsoil\" \/>\n<meta property=\"article:modified_time\" content=\"2025-08-13T15:11:00+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/www.dextrous-lubricant.com\/wp-content\/uploads\/2025\/06\/Dirt-Bike-Oil-10W-40_result.webp\" \/>\n\t<meta property=\"og:image:width\" content=\"2500\" \/>\n\t<meta property=\"og:image:height\" content=\"2501\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/webp\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"Est. reading time\" \/>\n\t<meta name=\"twitter:data1\" content=\"2 minutes\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"WebPage\",\"@id\":\"https:\/\/www.dextrous-lubricant.com\/en\/product\/10w-40-synthetic-dirt-bike-oil\/\",\"url\":\"https:\/\/www.dextrous-lubricant.com\/en\/product\/10w-40-synthetic-dirt-bike-oil\/\",\"name\":\"10W-40 Synthetic Dirt Bike Oil - 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