AMSOIL has released a value-priced synthetic 15W-40 that meets the the latest diesel specifications. The new OE 15W-40 Synthetic Diesel Oil is formulated to meet the API CJ-4 specification as well as previous specs for all on and off-road applications. Best of all, OE 15W-40 is priced right for fleets or value minded diesel owners. Unlike the premium AMSOIL products, OE is not designed for ultra-long drain intervals. The recommended service interval is as suggested by your owner’s manual. Nevertheless, OE 15W-40 will deliver AMSOIL synthetic quality and all-weather performance at a great price.