$20 to enroll. 25% off every order. Free after $500 lifetime spend.
AMSOIL's Preferred Customer program turns one-time enrollment into standing pricing across the full catalog — Signature Series motor oils, gear oils, transmission fluids, filters, and powersports lines. One dealer-referred account, the same price at every order on amsoil.com, free shipping over $100, and after $500 lifetime spend the annual fee drops to zero.
Pricing comes from AMSOIL — not added by the dealer.
Three steps on amsoil.com — one enrollment, one account.
The whole flow happens on amsoil.com through the dealer referral. There is no separate local signup — the local dealer is the reason the tag is on the URL, not an extra step in front of you.
Click the enrollment link
Open amsoil.com through the dealer referral — the tag zo=30987035 rides along on the URL so your new account is permanently attributed to the local dealer and benefits flow through to every order.
Create your account & pay $20
Fill in your name, shipping address, and payment, then pay the one-time $20 enrollment. The catalog unlocks at Preferred Customer pricing the moment checkout completes — no waiting, no further setup.
Shop at Preferred Customer pricing
Every order placed through your account applies 25% off at checkout, on top of free shipping over $100, a $5 birthday certificate each year, and $5 back for every $100 spent — same account, same cart, every refill.
Spend $500 lifetime — the $20 renewal drops to $0.
The annual $20 membership fee is real, but it stops recurring the moment the cumulative spend through your account crosses $500. From that cycle forward the membership renews itself for free — every order is still 25% off, and you stop paying to keep the pricing.
- Annual fee
- $20
- Spend threshold
- $500 lifetime
- Renewal after threshold
- Free
- Deduction
- Automatic on next renewal date
At 25% off full-synthetic AMSOIL pricing, $500 lifetime spend lands well inside a year for most vehicle owners — and the renewal fee stops the moment that line is crossed.
What 25% off actually looks like on a tow rig.
A tow rig running heavy loads and long grades rarely hits the 25,000-mile drain the Signature Series Max-Duty Synthetic Diesel Oil 15W-40 is rated for — three changes a year is closer to the realistic cadence for a rig that sees a trailer every weekend. Three cases of full-synthetic at Preferred Customer pricing benchmarks cleanly against three cases of premium conventional delvac from the parts store.
- Use case
- Tow-rig, Power Stroke / Duramax / Cummins
- Viscosity
- Signature Series Max-Duty 15W-40
- Drain interval
- 25,000 mi / 1 yr (AMSOIL claim)
- Cases per year
- 3 (realistic cadence for a tow rig)
- Retail benchmark (Mobil 1 delvac at parts store)
- $75 / case (approx)
- AMSOIL Preferred Customer price
- ~$56 / case (≈ 25% off)
- Cases per year
- 3
- Annual retail cost (Mobil 1)
- 3 × $75 = $225
- Annual Preferred Customer cost
- 3 × $56 = $168
- Net savings
- ~$57 / yr (illustrative)
Illustrative comparison vs. Mobil 1 delvac retail at parts stores — actual AMSOIL Preferred Customer pricing on your order is set at checkout through the dealer referral and varies by line, viscosity, and pack size.
Ready to enroll through the dealer referral?Pricing comes from AMSOIL — not added by the dealer.
Enroll in Preferred Customer