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🛠️ Keep your classic engine roaring with Castrol’s legendary protection!
Castrol GTX Classic 20W-50 is a premium conventional motor oil designed specifically for classic, muscle, and performance engines. Its high zinc and phosphorus content provides superior wear protection for engines with high-tension valve springs and performance mods. The oil maintains a thick protective film under extreme heat, resists foaming, and is compatible with gasoline and alcohol fuels. Meeting API SJ standards, it’s the trusted choice for vintage vehicles needing robust lubrication and engine longevity.
| ASIN | B093RT3B1W |
| Automotive Fit Type | Universal Fit |
| Best Sellers Rank | #5,432 in Automotive ( See Top 100 in Automotive ) #93 in Motor Oils |
| Brand Name | Castrol |
| Compatible with Vehicle Type | push-rod, flat tappet engines and performance cam applications |
| Container Type | Bottle |
| Customer Reviews | 4.8 4.8 out of 5 stars (1,564) |
| Global Trade Identification Number | 00079191218914 |
| Included Components | Motor Oil |
| Item Type Name | Motor Oil |
| Liquid Volume | 6 Quarts |
| Manufacturer | Castrol |
| Manufacturer Part Number | 15E809 |
| Manufacturer Warranty Description | 12 months |
| Model Number | 15E809 |
| SAE J300 Viscosity Grade | 20W-50 |
| Size | 1 Quart, Pack of 6 |
| UPC | 079191218914 |
| Unit Count | 192.0 Fluid Ounces |
| Viscosity | 20W-50 SAE Grade |
J**L
Castrol
Good oil and good price
J**Y
Castrol Motor Oil, High-Zinc
Highly recommend. Bought this oil for my 1972 VW Super Beetle for the high-zinc additive needed for older air-cooled engines.
D**S
good oil, extra ZDDP for older motors
good price, fast delivery
L**E
Awesome Performance – Perfect for Lawn Equipment
I’ve been using Castrol GTX Classic 20W-50 in my lawn equipment, and it’s been absolutely great. It provides solid protection, smooth operation, and helps extend the life of my mower and trimmer. This oil is especially good for older engines or small engines that run hot and need a thicker oil. The only downside is that it’s hard to find in stores, so I usually have to order it online. But when I can get it, it’s worth every penny. If you're maintaining older engines or heavy-duty lawn tools, this oil is a reliable choice. Highly recommended!
4**S
Best stuff for pre-1970 cars.
I use it on my 1960 MGA because of the high zinc content. Delivery was very quick.
R**B
Necessary if you don't have a roller cam.
Great. Using on flat tappet camed Pontiac. Has the necessary zddp.
N**H
has what I needed for older Flat tappet cam/lifters
was what I wanted wish was offered in 10/40 but is cheaper than buying additional additives.
J**S
Castros oil
Great oil!
Trustpilot
2 weeks ago
2 weeks ago