Pennzoil Platinum High Mileage Full Synthetic Motor Oil 5W-30 — 1 qt (6-Pack), Seal-Conditioning & 15,000-mi Warranty

Pennzoil Platinum High Mileage Full Synthetic 5W-30 is a full-synthetic motor oil formulated to protect and condition engines over 75,000 miles while reducing oil burn-off and helping control leaks.

This six-pack of 1-quart containers delivers Pennzoil’s Platinum High Mileage formula, engineered from natural gas-based base oils and advanced additives for improved piston cleanliness, wear protection, and low-temperature flow. It’s designed for higher-mileage vehicles and comes with a 15,000-mile protection warranty when eligibility conditions are met. The oil meets modern industry standards (API SP, ILSAC GF-6A) and many OEM requirements, offering consistent performance in both cold starts and extreme heat.

How does this oil help older engines with leaks?

Pennzoil Platinum High Mileage contains seal-conditioning additives that help rejuvenate rubber and polymer seals in engines with higher mileage. While it won’t magically fix mechanically damaged seals, it can reduce drips and seepage by improving seal pliability and compatibility.

• Seal conditioners formulated for older engine gaskets and O-rings
• Proven to help stop leaks in engines with more than 75,000 miles
• Compatible with typical seal materials used by major OEMs

Will this oil improve fuel economy or protect horsepower?

The formula is designed to lower internal friction and reduce oil consumption compared with conventional high-mileage oils, which can help preserve horsepower and deliver modest fuel economy benefits under normal driving. It’s engineered to meet resource-conserving standards so you get balanced protection and efficiency.

• Reduced oil burn-off compared to crude-based high-mileage oils
• Unsurpassed wear protection demonstrated in industry wear tests
• Meets API SP-Resource Conserving and ILSAC GF-6A specifications

How does it perform in extreme temperatures and cold starts?

Pennzoil Platinum High Mileage flows quickly at low temperatures for faster oil circulation on startup, while also maintaining film strength in high heat to protect against wear. This makes it suitable for varied climates and long drives where temperature extremes occur.

• Faster low-temperature oil flow for improved cold-start protection
• High-temperature stability to resist breakdown during sustained heat
• Full synthetic base oils derived from natural gas for thermal performance

Is this oil covered by any warranty or guarantees?

Yes—Pennzoil offers a Lubrication Limited Warranty that can provide protection for up to 15,000 miles or one year when eligibility requirements are met. Enrollment, vehicle age/mileage limits, and use of appropriate filters and maintenance intervals are required; exclusions apply.

• 15,000-mile protection guarantee when enrolled and eligible
• Requires following OEM oil change intervals and proper filter use
• Not valid for severe driving, racing, or certain commercial uses

Who is this for: Pennzoil Platinum High Mileage Full Synthetic 5W-30 is aimed at owners of passenger cars, light trucks, and SUVs with more than 75,000 miles who want full-synthetic protection and seal-conditioning benefits. It’s well suited for drivers seeking reduced oil consumption, strong wear protection, and consistent performance across cold starts and hot operating conditions, provided the vehicle’s specifications match SAE 5W-30 and the OEM approvals listed.