Leading Synthetic Engine Oil

Innovation and Leadership
AMSOIL has a documented history of innovation and leadership. In 1972, AMSOIL, the leading synthetic motor oil, introduced the first American Petroleum Institute leading synthetic oil for automotive applications. AMSOIL was the first to introduce a concept of "extended drain intervals" with a recommended 25,000-mile 12-month drain interval. AMSOIL lubricant technology has been field tested over the last 35 years in the most severe driving conditions. Including family fleets, over the road big rigs, towing, hauling and of course racing. Thus, the leading synthetic motor oil and filter is by far, Amsoil !

3 Levels of Leading Engine Protection - 25k, 10k & OEM

Amsoil synthetic motor oil Signature series

AMSOIL Signature Series Line (25 k mile/1 yr drain interval)

AMSOIL 0W-20 (ASM), 5W-30 (ASL) and 10W-30 (ATM) Synthetic Motor Oils join AMSOIL Signature Series 0W-30 to round out the new Signature Series line. Signature Series 0W-30 is now identified by product code AZO.

In addition to leading the synthetic motor oil industry, Amsoil has reformulated it to meet the latest API SN Resource Conserving and ILSAC GF-5 industry specifications, the new Signature Series line features all-new packaging and represents the very best motor oils AMSOIL has to offer, allowing motorists to take advantage of maximum extended drain intervals. In the interest of consistency and clarity within the Signature Series line, all four leading synthetic motor oils are recommended for drain intervals of up to 25,000 miles/one year, whichever comes first (15,000 miles/one year in severe service conditions). Click to see 25 k mile oil page.

IF YOU WOULD LIKE TO GO DIRECTLY TO ONE OF THE PRODUCT PAGES BELOW TO ORDER OR GET MORE INFORMATION PLEASE DO SO BY SELECTING A CATEGORY.

NOTE: TO UTILIZE THE FREE SHIPPING, PICK A CATEGORY AND FOLLOW THESE STEPS. WHEN THE NEW WEB WINDOW APPEARS, CLICK ON THE TAB THAT SAYS "CONTINUE SHOPPING". YOU WILL BE TAKEN TO THE ONLINE STORE TO MAKE YOUR PURCHASE OR GET MORE DETAILS ON THE PRODUCT'S.

NOTE: TO GET DEALER PRICES, CHOOSE THE "BUY WHOLESALE" OPTION IN THE NEXT WINDOW AFTER YOU PICK A CATEGORY BELOW. TO ADD THE PREFERRED CUSTOMER DISCOUNT TO YOUR SHOPPING CART, CLICK ON THE "SAVE 25%" LOGO ON THE PAGE THAT COMES UP. YOU WILL RECEIVE THE WHOLESALE DISCOUNT ONCE YOU ADD THE P.C. DISCOUNT TO YOUR CART, WHOLESALE PRICING WILL BE DISPLAYED FOR YOUR ORDER. 6 MONTH TRIAL, OR 1 YEAR MEMBERSHIPS ARE AVAILABLE.

REQUEST THE PRICING AND PREFERRED CUSTOMER DISCOUNT EMAIL BY SELECTING ENTERING YOUR NAME AND EMAIL. CLICK HERE