AMSOIL 100% Synthetic High-Mileage Motor Oil 5W-30
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Engineered for Vehicles With Over 75,000 Miles
With rapidly rising new-vehicle pricing and the high cost of repairs, drivers are keeping their vehicles on the road longer than ever. AMSOIL 100% Synthetic High-Mileage Motor Oil is designed specifically for the unique demands of high-mileage engines, helping extend the life of your vehicle. It cleans and protects with boosted detergency and an additive package that fights oil breakdown and oil leaks.
Key Benefits
- Engineered for vehicles with over 75,000 miles
- Reduced sludge by 67% in the modified Sequence VH test (ASTM D8256, AMSOIL 0W-20)
- Up to 62% better deposit prevention than competing high-mileage oils in TEOST 33C (vs Valvoline MaxLife and Mobil 1 High-Mileage 0W-20)
- Boosted detergency removes deposit buildup to help restore peak performance
- Highly durable viscosity maintains film thickness even in extreme temperatures
- Thermally stable formulation resists volatility and oil consumption
- Boosted seal conditioners help restore aging seals and stop leaks
- Does not void new vehicle or equipment manufacturer warranties; covered by the AMSOIL Limited Warranty
Engine Cleanliness, Durable Viscosity, Leak Protection
Engine cleanliness: Enhanced detergency breathes new life into dirty engines by removing deposit buildup. In the modified Sequence VH test (ASTM D8256), AMSOIL 0W-20 100% Synthetic High-Mileage Motor Oil reduced sludge by 67%. In the TEOST 33C test (ASTM D6335) required by the ILSAC GF-6 specification, the 0W-20 grade delivered up to 62% better deposit prevention than Valvoline Full Synthetic High-Mileage with MaxLife Technology 0W-20 and Mobil 1 High-Mileage 0W-20 Full Synthetic Motor Oil.
Durable viscosity: Formulated to maintain viscosity even in extreme temperatures, providing proper film thickness to help counteract compression loss as cylinders and piston rings wear.
Oil-consumption control and leak protection: Thermally stable across a wide range of temperatures, resisting volatility and consumption, with a boosted dose of seal conditioners to restore aging seals and help stop leaks.
Technical Specifications
| Property | Value |
|---|---|
| Kinematic Viscosity @ 100°C, cSt | 11.1 |
| Kinematic Viscosity @ 40°C, cSt | 63.0 |
| Viscosity Index | 170 |
| CCS Viscosity | 4747 cP @ -30°C |
| Flash Point | 224°C |
| Fire Point | 244°C |
| Pour Point | -42°C |
| NOACK Volatility, % weight loss | 8.5 |
| Total Base Number | 10.0 |
| HTHS Viscosity, cP | 3.3 |
Industry Certifications & OEM Approvals
API
- SQ, SP, SN Plus...
ILSAC
- GF-7A, GF-6A, GF-5...
GM
- dexos1 Gen 3 (supersedes dexos1 Gen 2, GM 4718M, 6094M)
Chrysler
- MS-6395
Ford
- WSS-M2C929-A, WSS-M2C946-A, WSS-M2C946-B1, WSS-M2C961-A1, WSS-M2C971-A1
5W-30 Applications
Use AMSOIL 100% Synthetic High-Mileage 5W-30 Motor Oil in applications that require any of the following specifications: API SQ, SP, SN Plus...; ILSAC GF-7A, GF-6A, GF-5...; GM dexos1 Gen 3 (supersedes dexos1 Gen 2, GM 4718M, 6094M); Chrysler MS-6395; Ford WSS-M2C929-A, WSS-M2C946-A, WSS-M2C946-B1, WSS-M2C961-A1, WSS-M2C971-A1.
Pros and Cons
Pros
- Engineered for vehicles with over 75,000 miles
- Reduced sludge by 67% in the modified Sequence VH test (ASTM D8256, AMSOIL 0W-20)
- Up to 62% better deposit prevention than competing high-mileage oils in TEOST 33C (vs Valvoline MaxLife and Mobil 1 High-Mileage 0W-20)
- Boosted detergency removes deposit buildup to help restore peak performance
- Highly durable viscosity maintains film thickness even in extreme temperatures
- Thermally stable formulation resists volatility and oil consumption
- Boosted seal conditioners help restore aging seals and stop leaks
- Does not void new vehicle or equipment manufacturer warranties; covered by the AMSOIL Limited Warranty
Cons
- Premium Investment: Higher initial cost compared to conventional or "shelf-brand" synthetic oils.
- Limited Local Retail: Primarily available through authorized dealers and specialized synthetic outlets. National Synthetics is a local stocking dealer. Call 1-678-944-8816 to confirm in-stock items for same-day local pickup.
Order Through Your Independent AMSOIL Dealer
Give your high-mileage engine the purpose-built protection it needs. As your Independent AMSOIL Dealer, we provide expert guidance and competitive pricing on all AMSOIL products.
Independent AMSOIL Dealer #1858536
Shipping & Returns
Fast, Reliable Shipping
- Free standard ground shipping on orders of $100 ($130 in Canada) or more.
- Orders under the threshold ship for a flat $9.99 ($12.99 in Canada) freight charge.
- In-stock items typically delivered in two to three business days.
- U.S. and Canada only — no shipments to PO Boxes.
30-Day Return Policy
- Return unopened, currently marketed products within 30 days for a full refund (minus freight).
- Exchange unopened products within 90 days with no restocking fee.
- Special-order items are non-returnable.
- Returns are handled directly by AMSOIL.
Frequently Asked Questions
AMSOIL 100% Synthetic High-Mileage Motor Oil is engineered for vehicles with over 75,000 miles. Its boosted detergency, durable viscosity, oil-consumption control and seal-conditioner package address the issues high-mileage engines commonly face: deposit buildup, compression loss, oil consumption and leaking seals.
Yes. AMSOIL 100% Synthetic High-Mileage Motor Oil provides a boosted dose of seal conditioners to restore aging seals and help stop leaks.
No. Using AMSOIL synthetic lubricants or practicing extended drain intervals does not void your new vehicle or equipment manufacturer warranty. All AMSOIL lubricants and filters are covered by the AMSOIL Limited Warranty.
In personal vehicles not operating under severe service, change up to 12,000 miles or one year, whichever comes first. Under severe service, follow the severe-service drain interval prescribed by your vehicle manufacturer in your owner's manual.
Customer Reviews
See all 392 reviewsGreat Oil
I have used Amsoil products over 40 years and have nothing but praise for their products. I gave my son in law a truck with 265k miles and he had his mechanic go through everything. The Engine compression test made the mechanic question if the engine was original because it showed minimal wear for the high mileage. The differential was quite and showed minimal wear. If you convert to Amsoil after the 1st 5k your engine will last a very long time & maintain its performance. I changed the differential after the 1st oil change also. Back in the aspirated carb days we used the foam regularly to keep it clean. We used to buy litte old lady cars and bring them back to life after a foam treatment. Kudos for making great stuff.
Independent AMSOIL Dealer #1858536. Product information sourced from AMSOIL. Visit AMSOIL.com for the most current product details and availability.