🛠️ Keep your classic engine roaring with Castrol’s legendary protection!
Castrol GTX Classic 20W-50 Conventional Motor Oil is engineered for high-performance and vintage engines, delivering superior wear protection with its high zinc and phosphorus content. Its thick oil film resists thermal breakdown and foaming, compatible with gasoline and alcohol fuels, and meets API SJ standards—making it the go-to choice for muscle cars, hot rods, and collector vehicles seeking reliable, long-lasting engine care.
| 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 |
| 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 |
P**N
Great old formula oil.
Thank goodness it has zinc. Superior lubrication on vintage motors. Especially motors with solid lifter cams.
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!
M**E
Awesome classic car motor oil
Great price on classic car oil. It has the ZDDP in with the API classification of SG.
J**.
best oil for Rolls Royce
this is the only oil I use for my 65 Rolls-Royce silver cloud three. I like the zinc content. The oil is perfect for my engine in this vehicle
W**Y
Premium quality classic engine oil.
Castrol quality with classic car type additives. This is all my restored British convertible gets. A proven lubricant.
C**N
Easy to find classic car formula for great price
Great alternative to zinc additives or running a standard oil in older flat tappet cars. I have used this and Lucas classic car formula. It feels like Lucas does a better job with cleaning and cooling, but this seems to work well too. This is cheaper usually so well worth it. Put it this way, if I can get Lucas on sale where its within a few bucks of Castrol, I'll buy Lucas. If Lucas is too expensive or too hard to get, I'll happily use the Castrol.
W**
Price to high
Price was to high because of the shipping cost
B**L
Good oil
High zinc for old cars
Trustpilot
1 month ago
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