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๐ Elevate your engineโs game with PENN GRADE 1 โ where performance meets precision.
PENN GRADE 1 Synthetic Blend High Performance Oil SAE 10W-40 (5 Quart) is engineered with premium base stocks and advanced additives to protect and enhance high-stress street and racing engines. It offers excellent thermal stability, anti-wear properties, and friction reduction to boost horsepower and maintain engine integrity under extreme conditions.














| ASIN | B0CZ1631RH |
| Best Sellers Rank | #64,823 in Automotive ( See Top 100 in Automotive ) #528 in Motor Oils |
| Brand Name | PENN GRADE1 |
| Compatible with Vehicle Type | Car, Truck |
| Container Type | Bottle |
| Customer Reviews | 4.8 4.8 out of 5 stars (29) |
| Included Components | Oil |
| Item Type Name | Oil |
| Liquid Volume | 160 Fluid Ounces |
| Manufacturer | PENN GRADE 1 |
| Manufacturer Part Number | 71440 |
| Manufacturer Warranty Description | 10 Days |
| UPC | 816558025262 |
| Unit Count | 160.0 Fluid Ounces |
| Viscosity | 10W-40 |
M**A
Terrible/amazon made it right and send replacement!!!
Terrible. Container leaked everywhere !!! Lost atleast a 1/4 of oil!! Replacement container came and was perfect !!! No leaking!! Thank you
R**H
Protection for my 1967 Mustang roller motor
Good stuff right there
K**W
High Zinc oil
Great oil if you need an oil with a high zinc content. I have used this oil for years and am very pleased with it.
R**Y
Great oil
Great oil as must for high horsepower engines with flat tappet camshafts
J**E
great oil
I've been using it for years, works well in my the 390 in my '66 Ford Fairlane
S**R
Great price
Great oil for old cars
F**O
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B**Y
Poor shipping.
Great oil, but both bottles that I purchased were busted and leaking a lot. Canโt fault the oil for shipping/packing issues.
Trustpilot
3 weeks ago
2 weeks ago