





🛢️ Keep your classic engine roaring with Castrol’s ultimate protection!
Castrol GTX Classic 20W-50 Conventional Motor Oil is engineered for collector cars, muscle cars, and performance engines. Its high zinc and phosphorus content provides superior wear protection, while its thick oil film resists thermal breakdown and foaming under severe conditions. Compatible with gasoline and alcohol fuels, it meets API SJ standards, ensuring reliable, long-lasting engine performance.
| Viscosity | 20W-50 sae_grade |
| Brand | Castrol |
| Vehicle Service Type | push-rod, flat tappet engines and performance cam applications |
| Automotive Fit Type | Universal Fit |
| Global Trade Identification Number | 00079191220085 |
| Manufacturer | Castrol |
| Size | 5 Quarts |
| SAE J300 Viscosity Grade | 20W-50 |
| Model | GTX Classic 20W-50 Conventional |
| Item Weight | 9.63 pounds |
| Product Dimensions | 8.31 x 4.56 x 12.75 inches |
| Item model number | 15E809 |
| Manufacturer Part Number | 15E809 |
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