PennGrade 1 Full Synthetic 15W-50 is a high performance synthetic motor oil built for high-revving performance engines that need fast oil flow, strong film strength, and dependable wear protection under heat and heavy load. It uses premium synthetic base stocks with a high-zinc ZDDP anti-wear system to protect valvetrain and bearing surfaces in hard-driven street and race engines. This listing is for a single 5 quart bottle.
Specifications:
- Product: PennGrade 1 Full Synthetic High Performance Oil 15W-50
- Viscosity grade: SAE 15W-50
- Oil type: Full synthetic
- Zinc: ~1,500 ppm (0.15 mass %)
- Phosphorus: ~1,400 ppm (0.14 mass %)
- Anti-wear: High-zinc ZDDP additive system
- Viscosity index: 160
- Flash point: 454 F (234 C) (D92)
- Pour point: -27 F (-33 C) (D5950)
- Typical use: High-revving street and racing engines (road, oval, strip, endurance, hill climb, rally, drifting, vintage)
- Package: 5 Quart Bottle
- Part number: BPO71750
FAQ
Is PennGrade 1 15W-50 a full synthetic?
Yes. It is a full synthetic high performance oil made with premium synthetic base stocks.
Does it have high zinc?
Yes. It carries a high-zinc ZDDP anti-wear package, about 1,500 ppm zinc and 1,400 ppm phosphorus, to protect high-load valvetrain and bearing surfaces.
What is it used for?
PennGrade lists it for high-performance street and racing engines, including road, oval, strip, endurance, hill climb, road rally, drifting, and historic or vintage racing use.
How is this listing packaged?
This listing is a single 5 quart bottle. It is also stocked in other package sizes (Case of Four 5-Quart Bottles).

