Premium synthetic lubricants for every engine
Limited-Time AMSOIL Deal!
Get a FREE BOTTLE OF AMSOIL HIGH-FOAM CAR SHAMPOO when you spend $100 on AMSOIL products. Use code SHAMPOO326 at checkout! This exclusive offer is reserved for Preferred Customers and Online/Catalog Customers.
Free Gift with $100 Purchase
Qualifying AMSOIL orders receive a FREE BOTTLE OF AMSOIL HIGH-FOAM CAR SHAMPOO.
Fast Shipping on Orders $100+
Ships from AMSOIL warehouses with full tracking.
Trusted AMSOIL Performance
Independent AMSOIL Dealer support for product selection.
FREE BOTTLE OF AMSOIL HIGH-FOAM CAR SHAMPOO with qualifying purchase
Shop these top picks and apply your promo code at checkout.
Product Code: ASMQT-EA
Havasu Synthetics is an authorized AMSOIL dealer. Links earn us a commission at no extra cost to you. Full disclosure
Product Code: AZFQT-EA
Havasu Synthetics is an authorized AMSOIL dealer. Links earn us a commission at no extra cost to you. Full disclosure
Product Code: MFFQT-EA
Havasu Synthetics is an authorized AMSOIL dealer. Links earn us a commission at no extra cost to you. Full disclosure
Great product
"AMSOIL has protected me for years now — all my engines, never had an issue. All the research I've done leads to AMSOIL being the superior product among the oil masses."
- Verified Buyer, Canada
February 13, 2026
Best Oil On The Planet
"This is the best investment for your engine you can make. Do mid-cycle oil filter changes with a good filter."
- Verified Buyer, Texas
February 12, 2026
LT1 Engine Oil
"Quality product, and great customer service."
- Verified Buyer, Texas
February 11, 2026
Preferred Dealer Since 2001
Secure Checkout
Satisfaction Guaranteed
Get a FREE BOTTLE OF AMSOIL HIGH-FOAM CAR SHAMPOO when your AMSOIL order reaches $100. Use promo code SHAMPOO326 at checkout.
Eligible AMSOIL customers who meet the qualifying order amount and apply promo code SHAMPOO326 before the promotion expires.
This promotion is reserved for eligible AMSOIL customers placing qualifying orders of $100 with promo code SHAMPOO326. Orders that do not meet those conditions do not receive the free BOTTLE OF AMSOIL HIGH-FOAM CAR SHAMPOO.
The promotion expires Tuesday, April 7, 2026 at 11:59 PM Central Time.
1) Add AMSOIL products to reach $100.
2) Enter code SHAMPOO326 at checkout.
3) Receive your FREE BOTTLE OF AMSOIL HIGH-FOAM CAR SHAMPOO if order requirements are met.
Shop directly at AMSOIL.com using dealer number 30576570 and apply promo code SHAMPOO326 during checkout.
Exclusive offer for AMSOIL Preferred Customers and online/catalog customers. Valid through 11:59 p.m. Central April 7, 2026. Offer applies only to current orders of $100 or more based on subtotal with savings. Limited to one free High-Foam Car Shampoo (HFBCN). To redeem, use code SHAMPOO326 at checkout. Code will automatically apply product, if eligible, in cart at checkout. Offer may be modified or terminated at any time except as prohibited by law. Available while supplies last.
