I know it's hard to believe, but there are a few things that I would like to clarify. I'm sure Tooslick will agree. The 25000/1 year that is on the back of the bottle is not an absolute! One must realize that is for non-severe service and that the indicated drain interval also has a time period of 1 year as well. Anyhow, for those that are interested in Amsoil I would encourage you to download the following PDF and print it out. This will help you in determining the proper lube/drain interval. http://www.amsoil.com/lit/g1490.pdf Here are some points to consider: From the brochure
quote:I would like to also emphisize that working with a knowledge dealer to determine your proper interval is probably a good idea. As in all sales, you must make sure who you are working with is looking out for your best interest. I believe that most folks on here are here to help.
Extending motor oil drain intervals does not void new vehicle warranties. To affect vehicle warranty, the oil must be directly responsible for the engine failure. If the oil didn’t cause the problem, the warranty cannot be voided, regardless of brand or length of time in use. 1. UMR means use equipment manufacturer’s recommended drain interval. N/A means the oil may not be used in the application. Where AMSOIL recommends up to 2 or 3 times longer, it means up to 2 or 3 times the equipment manufacturer’s recommendation. AMSOIL service interval recommendations are whichever comes first – months, miles or hours. 3. Oils specifically designed for an application are shown in shaded boxes. 4. Blocks not shaded indicate oils that are not specifically formulated for these applications and are therefore the oil of second choice. Their performance in the application would still be superior to a similar viscosity conventional oil. 5. Oils shown in boxes maked “N/A” should not be considered due to viscosity or performance requirements. All drain intervals can be extended (with analysis) indefinitely by using AMSOIL By-Pass Oil Filtration and an AMSOIL Oil-Wetted Foam Air Filter. 7. All AMSOIL lubricants are warranted by AMSOIL INC. (see AMSOIL Product Warranty G-1363.) 8. Oil Analyzers Inc. offers oil analysis services for all engine and component applications. Consult your price list for more information. 9. AMSOIL SDF Oil Filters must be changed at least every 6 months regardless of miles driven. Replace other brands of oil filters at the engine manufacturer’s recommended filter change interval. 10.The AMSOIL 20W-50 (AMV, ARO), 15W-40 (AME, PCO), 10W-40 (AMF, AMO), 5W-30 (HDD), 0W-40 (AFF) and SAE 30 (ACD) meet specifications for the wet clutch system. 11.Meets “Honda Service Fill” recommendations of 10,000 miles (XLM 5W-20). Notice: Modifications to engine will change service intervals. Notice: More frequent service may be required under severe service operating conditions. Regular oil analysis recommended for establishing drain interval. During long periods of idle service, base service on hours of operations.