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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 specially formulated for vintage and performance engines. Its high zinc and phosphorus content provides superior wear protection for push-rod and flat tappet engines, maintaining a durable oil film under extreme conditions. Compatible with gasoline and alcohol fuels, it meets API SJ standards and is favored by classic car enthusiasts for reliable, long-lasting engine care.
| ASIN | B093RT3B1W |
| Automotive Fit Type | Universal Fit |
| Best Sellers Rank | #3,961 in Automotive ( See Top 100 in Automotive ) #76 in Motor Oils |
| Brand | Castrol |
| Customer Reviews | 4.8 4.8 out of 5 stars (1,536) |
| Date First Available | April 28, 2021 |
| Global Trade Identification Number | 00079191218914 |
| Item Weight | 12.44 pounds |
| Item model number | 15E809 |
| Manufacturer | Castrol |
| Manufacturer Part Number | 15E809 |
| Model | GTX Classic 20W-50 Conventional |
| Package Dimensions | 9.5 x 9 x 7.69 inches |
| SAE J300 Viscosity Grade | 20W-50 |
| Size | 1 Quart, Pack of 6 |
| UPC | 079191218914 |
| Vehicle Service Type | push-rod, flat tappet engines and performance cam applications |
| Viscosity | 20W-50 SAE Grade |
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
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.
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!
J**S
Castros oil
Great oil!
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.
R**B
Necessary if you don't have a roller cam.
Great. Using on flat tappet camed Pontiac. Has the necessary zddp.
V**0
High zinc is good
Very good oil for older motors,my 340 has higher oil pressure with this weight
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